125 (number)

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← 124 125 126 →
120 121 122 123 124 125 126 127 128 129
List of numbersIntegers
0 100 200 300 400 500 600 700 800 900
Cardinalone hundred twenty-five
Ordinal125th
(one hundred twenty-fifth)
Factorization53
Divisors1, 5, 25, 125
Greek numeralΡΚΕ´
Roman numeralCXXV
Binary11111012
Ternary111223
Octal1758
DuodecimalA512
Hexadecimal7D16

125 (one hundred [and] twenty-five) is the natural number following 124 and preceding 126.

In mathematics[]

5cube.svg

125 is the cube of 5. It can be expressed as a sum of two squares in two different ways, 125 = 10² + 5² = 11² + 2².[1]

125 and 126 form a Ruth-Aaron pair under the second definition in which repeated prime factors are counted as often as they occur.

Like many other powers of 5, it is a Friedman number in base 10 since 125 = 51 + 2.

U.S. military[]

  • Air National Guard 125th Special Tactics Squadron unit in Portland, Oregon
  • US Air Force 125th Fighter Wing, Air National Guard unit at Jacksonville International Airport, Florida
  • US Navy VAW-125 squadron at Naval Station Norfolk, Virginia
  • US Navy VFA-125 strike fighter squadron at Naval Air Station Lemoore, California
  • USNS Mission San Jose (T-AO-125), a US Navy fleet oiler during World War II
  • USS Tide (AM-125), a US Navy minesweeper
  • Northrop YC-125 Raider utility transport plane

In transportation[]

  • The Fiat 125 automobile
  • Many motorcycle licenses and racing events limit engine capacity to 125cc. Examples of 125cc motorcycles include;
    • The Honda XRM 125 motorcycle
    • The Yamaha YZ125, for motocross
  • The Harlem-125th Street (Metro-North) station serving Harlem, New York City
  • The InterCity 125, sometimes referred to simply as "one two five", a British high-speed train
  • New Jersey Transit bus route 125
  • London Buses route 125 is a Transport for London contracted bus route in London
  • 125 is the number of many roads, including Mexican Federal Highway 125
  • Pan Am Flight 125 from London’s Heathrow Airport to New York's John F. Kennedy International Airport which had pressurization problems on March 10, 1987
  • The crosses the Mississippi River in Minnesota
  • STS-125, a Space Shuttle Atlantis mission, the final mission to service the Hubble Space Telescope, launched May 11, 2009 at 2:01 pm EDT landed May 24, 2009 at 11:39:05 am EDT
  • 125 (dinghy) - a class of sailing dingy popular in Australia.
  • EMD F125 locomotive manufactured by Electro Motive Diesel.

In other fields[]

125 is also:

  • The year AD 125 or 125 BC
  • 125 AH is a year in the Islamic calendar that corresponds to 742743 CE
  • 125 Liberatrix is a Main belt asteroid
  • The atomic number of the yet-to-be-discovered element unbipentium
  • Sonnet 125 by William Shakespeare
  • 125th Street, Manhattan, New York City
    • 125th Street (New York City Subway), multiple subway stations
  • CA-125, also known as CA125, is an abbreviation for cancer antigen 125
  • 125 High Street is a 30-floor high-rise in Boston

See also[]

References[]

  1. ^ Wells, D. The Penguin Dictionary of Curious and Interesting Numbers London: Penguin Group. (1987): 136
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