125 (number)

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124 125 126
Cardinal one hundred and twenty-five
Ordinal 125th
(one hundred and twenty-fifth)
Factorization 53
Divisors 1, 5, 25, 125
Roman numeral CXXV
Binary 11111012
Ternary 111223
Quaternary 13314
Quinary 10005
Senary 3256
Octal 1758
Duodecimal A512
Hexadecimal 7D16
Vigesimal 6520
Base 36 3H36

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

In mathematics[edit]

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.

In the military[edit]

In transportation[edit]

In other fields[edit]

125 is also:

See also[edit]

References[edit]

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