56561525605 has 128 divisors (see below), whose sum is σ = 82081714176. Its totient is φ = 37023744000.

The previous prime is 56561525593. The next prime is 56561525621. The reversal of 56561525605 is 50652516565.

56561525605 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 56561525605 - 2¹⁵ = 56561492837 is a prime.

It is a Smith number, since the sum of its digits (46) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 215062704 + ... + 215062966.

It is an arithmetic number, because the mean of its divisors is an integer number (641263392).

Almost surely, 2^56561525605 is an apocalyptic number.

It is an amenable number.

56561525605 is a deficient number, since it is larger than the sum of its proper divisors (25520188571).

56561525605 is a wasteful number, since it uses less digits than its factorization.

56561525605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 487.

The product of its (nonzero) digits is 1350000, while the sum is 46.

The spelling of 56561525605 in words is "fifty-six billion, five hundred sixty-one million, five hundred twenty-five thousand, six hundred five".