56631665225 has 24 divisors (see below), whose sum is σ = 74526801408. Its totient is φ = 42541241600.

The previous prime is 56631665147. The next prime is 56631665231. The reversal of 56631665225 is 52256613665.

It is not a de Polignac number, because 56631665225 - 2¹⁴ = 56631648841 is a prime.

It is a hoax number, since the sum of its digits (47) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 56631665225.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 28592 + ... + 337758.

It is an arithmetic number, because the mean of its divisors is an integer number (3105283392).

Almost surely, 2^56631665225 is an apocalyptic number.

It is an amenable number.

56631665225 is a deficient number, since it is larger than the sum of its proper divisors (17895136183).

56631665225 is a wasteful number, since it uses less digits than its factorization.

56631665225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 309625 (or 309620 counting only the distinct ones).

The product of its digits is 1944000, while the sum is 47.

The spelling of 56631665225 in words is "fifty-six billion, six hundred thirty-one million, six hundred sixty-five thousand, two hundred twenty-five".