56666025 has 36 divisors (see below), whose sum is σ = 109308108. Its totient is φ = 27895680.

The previous prime is 56666017. The next prime is 56666053. The reversal of 56666025 is 52066665.

56666025 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 6 ways, for example, as 10575504 + 46090521 = 3252^2 + 6789^2 .

It is not a de Polignac number, because 56666025 - 2³ = 56666017 is a prime.

It is a super-2 number, since 2×56666025² = 6422076778601250, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 6762 + ... + 12611.

Almost surely, 2^56666025 is an apocalyptic number.

It is an amenable number.

56666025 is a deficient number, since it is larger than the sum of its proper divisors (52642083).

56666025 is a wasteful number, since it uses less digits than its factorization.

56666025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19402 (or 19394 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 36.

The square root of 56666025 is about 7527.6839067538. The cubic root of 56666025 is about 384.0970010482.

The spelling of 56666025 in words is "fifty-six million, six hundred sixty-six thousand, twenty-five".