125656425 has 18 divisors (see below), whose sum is σ = 225065022. Its totient is φ = 67016640.

The previous prime is 125656411. The next prime is 125656451. The reversal of 125656425 is 524656521.

125656425 is a `hidden beast` number, since 1 + 2 + 5 + 6 + 5 + 642 + 5 = 666.

It can be written as a sum of positive squares in 3 ways, for example, as 13571856 + 112084569 = 3684^2 + 10587^2 .

It is not a de Polignac number, because 125656425 - 2⁴ = 125656409 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 125656425.

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, 279012 + ... + 279461.

Almost surely, 2^125656425 is an apocalyptic number.

125656425 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

125656425 is a deficient number, since it is larger than the sum of its proper divisors (99408597).

125656425 is a wasteful number, since it uses less digits than its factorization.

125656425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 558489 (or 558481 counting only the distinct ones).

The product of its digits is 72000, while the sum is 36.

The square root of 125656425 is about 11209.6576664945. The cubic root of 125656425 is about 500.8737057207.

The spelling of 125656425 in words is "one hundred twenty-five million, six hundred fifty-six thousand, four hundred twenty-five".