25565927365153 has 24 divisors (see below), whose sum is σ = 30586820490600. Its totient is φ = 21291317607168.

The previous prime is 25565927365133. The next prime is 25565927365157. The reversal of 25565927365153 is 35156372956552.

It can be written as a sum of positive squares in 4 ways, for example, as 14590707264 + 25551336657889 = 120792^2 + 5054833^2 .

It is a de Polignac number, because none of the positive numbers 2^k-25565927365153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25565927365157) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8659188 + ... + 11230021.

It is an arithmetic number, because the mean of its divisors is an integer number (1274450853775).

Almost surely, 2^{25565927365153} is an apocalyptic number.

It is an amenable number.

25565927365153 is a deficient number, since it is larger than the sum of its proper divisors (5020893125447).

25565927365153 is a wasteful number, since it uses less digits than its factorization.

25565927365153 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19889969 (or 19889962 counting only the distinct ones).

The product of its digits is 255150000, while the sum is 64.

The spelling of 25565927365153 in words is "twenty-five trillion, five hundred sixty-five billion, nine hundred twenty-seven million, three hundred sixty-five thousand, one hundred fifty-three".