5656640125205 has 16 divisors (see below), whose sum is σ = 6830386683120. Its totient is φ = 4497086694912.

The previous prime is 5656640125049. The next prime is 5656640125231. The reversal of 5656640125205 is 5025210466565.

It can be written as a sum of positive squares in 8 ways, for example, as 1360633597444 + 4296006527761 = 1166462^2 + 2072681^2 .

It is a cyclic number.

It is not a de Polignac number, because 5656640125205 - 2¹⁶ = 5656640059669 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 5656640125205.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2506370 + ... + 4194659.

It is an arithmetic number, because the mean of its divisors is an integer number (426899167695).

Almost surely, 2^{5656640125205} is an apocalyptic number.

It is an amenable number.

5656640125205 is a deficient number, since it is larger than the sum of its proper divisors (1173746557915).

5656640125205 is a wasteful number, since it uses less digits than its factorization.

5656640125205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6702088.

The product of its (nonzero) digits is 2160000, while the sum is 47.

The spelling of 5656640125205 in words is "five trillion, six hundred fifty-six billion, six hundred forty million, one hundred twenty-five thousand, two hundred five".