125637880 has 32 divisors (see below), whose sum is σ = 297565200. Its totient is φ = 47609856.

The previous prime is 125637877. The next prime is 125637881. The reversal of 125637880 is 88736521.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125637881) 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, 81897 + ... + 83416.

Almost surely, 2^125637880 is an apocalyptic number.

125637880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

125637880 is an abundant number, since it is smaller than the sum of its proper divisors (171927320).

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

125637880 is a wasteful number, since it uses less digits than its factorization.

125637880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165343 (or 165339 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 40.

The square root of 125637880 is about 11208.8304474642. The cubic root of 125637880 is about 500.8490640311.

The spelling of 125637880 in words is "one hundred twenty-five million, six hundred thirty-seven thousand, eight hundred eighty".