125663980 has 24 divisors (see below), whose sum is σ = 284194512. Its totient is φ = 46398912.

The previous prime is 125663959. The next prime is 125663981. The reversal of 125663980 is 89366521.

It is not an unprimeable number, because it can be changed into a prime (125663981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 241402 + ... + 241921.

It is an arithmetic number, because the mean of its divisors is an integer number (11841438).

Almost surely, 2^125663980 is an apocalyptic number.

125663980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

125663980 is an abundant number, since it is smaller than the sum of its proper divisors (158530532).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

125663980 is a wasteful number, since it uses less digits than its factorization.

125663980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 483345 (or 483343 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 40.

The square root of 125663980 is about 11209.9946476348. The cubic root of 125663980 is about 500.8837437404.

The spelling of 125663980 in words is "one hundred twenty-five million, six hundred sixty-three thousand, nine hundred eighty".