125665072 has 40 divisors (see below), whose sum is σ = 270677120. Its totient is φ = 56125440.

The previous prime is 125665051. The next prime is 125665073. The reversal of 125665072 is 270566521.

It is not an unprimeable number, because it can be changed into a prime (125665073) 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, 3297 + ... + 16192.

It is an arithmetic number, because the mean of its divisors is an integer number (6766928).

Almost surely, 2^125665072 is an apocalyptic number.

It is an amenable number.

125665072 is an abundant number, since it is smaller than the sum of its proper divisors (145012048).

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

125665072 is a wasteful number, since it uses less digits than its factorization.

125665072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19541 (or 19535 counting only the distinct ones).

The product of its (nonzero) digits is 25200, while the sum is 34.

The square root of 125665072 is about 11210.0433540642. The cubic root of 125665072 is about 500.8851946029.

The spelling of 125665072 in words is "one hundred twenty-five million, six hundred sixty-five thousand, seventy-two".