56661024025 has 12 divisors (see below), whose sum is σ = 71585325612. Its totient is φ = 44473557440.

The previous prime is 56661024011. The next prime is 56661024037. The reversal of 56661024025 is 52042016665.

It can be written as a sum of positive squares in 6 ways, for example, as 8079133456 + 48581890569 = 89884^2 + 220413^2 .

It is not a de Polignac number, because 56661024025 - 2⁷ = 56661023897 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21380194 + ... + 21382843.

It is an arithmetic number, because the mean of its divisors is an integer number (5965443801).

Almost surely, 2^56661024025 is an apocalyptic number.

It is an amenable number.

56661024025 is a deficient number, since it is larger than the sum of its proper divisors (14924301587).

56661024025 is a wasteful number, since it uses less digits than its factorization.

56661024025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42763100 (or 42763095 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 37.

The spelling of 56661024025 in words is "fifty-six billion, six hundred sixty-one million, twenty-four thousand, twenty-five".