125664425 has 18 divisors (see below), whose sum is σ = 165538698. Its totient is φ = 94612480.

The previous prime is 125664419. The next prime is 125664443. The reversal of 125664425 is 524466521.

It can be written as a sum of positive squares in 9 ways, for example, as 18003049 + 107661376 = 4243^2 + 10376^2 .

It is not a de Polignac number, because 125664425 - 2²⁴ = 108887209 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 1472 + ... + 15921.

Almost surely, 2^125664425 is an apocalyptic number.

It is an amenable number.

125664425 is a deficient number, since it is larger than the sum of its proper divisors (39874273).

125664425 is a wasteful number, since it uses less digits than its factorization.

125664425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17437 (or 17415 counting only the distinct ones).

The product of its digits is 57600, while the sum is 35.

The square root of 125664425 is about 11210.0144959764. The cubic root of 125664425 is about 500.8843349812.

The spelling of 125664425 in words is "one hundred twenty-five million, six hundred sixty-four thousand, four hundred twenty-five".