125012644 has 6 divisors (see below), whose sum is σ = 218772134. Its totient is φ = 62506320.

The previous prime is 125012633. The next prime is 125012669. The reversal of 125012644 is 446210521.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 101606400 + 23406244 = 10080^2 + 4838^2 .

It is a super-2 number, since 2×125012644² = 31256322319741472, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15626577 + ... + 15626584.

Almost surely, 2^125012644 is an apocalyptic number.

It is an amenable number.

125012644 is a deficient number, since it is larger than the sum of its proper divisors (93759490).

125012644 is a wasteful number, since it uses less digits than its factorization.

125012644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31253165 (or 31253163 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 125012644 is about 11180.9053300705. The cubic root of 125012644 is about 500.0168580983.

The spelling of 125012644 in words is "one hundred twenty-five million, twelve thousand, six hundred forty-four".