125639880 has 32 divisors (see below), whose sum is σ = 376920000. Its totient is φ = 33503936.

The previous prime is 125639879. The next prime is 125639887. The reversal of 125639880 is 88936521.

It is not an unprimeable number, because it can be changed into a prime (125639887) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 523380 + ... + 523619.

It is an arithmetic number, because the mean of its divisors is an integer number (11778750).

Almost surely, 2^125639880 is an apocalyptic number.

125639880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

125639880 is an abundant number, since it is smaller than the sum of its proper divisors (251280120).

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

125639880 is a wasteful number, since it uses less digits than its factorization.

125639880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1047013 (or 1047009 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 42.

The square root of 125639880 is about 11208.9196624831. The cubic root of 125639880 is about 500.8517216500.

The spelling of 125639880 in words is "one hundred twenty-five million, six hundred thirty-nine thousand, eight hundred eighty".