125491656 has 32 divisors (see below), whose sum is σ = 330242400. Its totient is φ = 39628800.

The previous prime is 125491631. The next prime is 125491661. The reversal of 125491656 is 656194521.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 137145 + ... + 138056.

It is an arithmetic number, because the mean of its divisors is an integer number (10320075).

Almost surely, 2^125491656 is an apocalyptic number.

It is an amenable number.

125491656 is an abundant number, since it is smaller than the sum of its proper divisors (204750744).

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

125491656 is a wasteful number, since it uses less digits than its factorization.

125491656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 275229 (or 275225 counting only the distinct ones).

The product of its digits is 64800, while the sum is 39.

The square root of 125491656 is about 11202.3058340683. The cubic root of 125491656 is about 500.6546837376.

The spelling of 125491656 in words is "one hundred twenty-five million, four hundred ninety-one thousand, six hundred fifty-six".