56561716325 has 6 divisors (see below), whose sum is σ = 70136528274. Its totient is φ = 45249373040.

The previous prime is 56561716271. The next prime is 56561716327. The reversal of 56561716325 is 52361716565.

56561716325 is digitally balanced in base 11, 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 3 ways, for example, as 12373892644 + 44187823681 = 111238^2 + 210209^2 .

It is not a de Polignac number, because 56561716325 - 2⁸ = 56561716069 is a prime.

It is a Duffinian number.

56561716325 is strictly pandigital in base 11.

It is a self number, because there is not a number n which added to its sum of digits gives 56561716325.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56561716327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1131234302 + ... + 1131234351.

It is an arithmetic number, because the mean of its divisors is an integer number (11689421379).

Almost surely, 2^56561716325 is an apocalyptic number.

It is an amenable number.

56561716325 is a deficient number, since it is larger than the sum of its proper divisors (13574811949).

56561716325 is a wasteful number, since it uses less digits than its factorization.

56561716325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2262468663 (or 2262468658 counting only the distinct ones).

The product of its digits is 1134000, while the sum is 47.

The spelling of 56561716325 in words is "fifty-six billion, five hundred sixty-one million, seven hundred sixteen thousand, three hundred twenty-five".