56025511551 has 12 divisors (see below), whose sum is σ = 81034666128. Its totient is φ = 37300066944.

The previous prime is 56025511537. The next prime is 56025511609. The reversal of 56025511551 is 15511552065.

56025511551 is a `hidden beast` number, since 56 + 0 + 2 + 5 + 51 + 1 + 551 = 666.

It is not a de Polignac number, because 56025511551 - 2³⁰ = 54951769727 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56025511501) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4182450 + ... + 4195823.

It is an arithmetic number, because the mean of its divisors is an integer number (6752888844).

Almost surely, 2^56025511551 is an apocalyptic number.

56025511551 is a deficient number, since it is larger than the sum of its proper divisors (25009154577).

56025511551 is a wasteful number, since it uses less digits than its factorization.

56025511551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8379022 (or 8379019 counting only the distinct ones).

The product of its (nonzero) digits is 37500, while the sum is 36.

The spelling of 56025511551 in words is "fifty-six billion, twenty-five million, five hundred eleven thousand, five hundred fifty-one".