25504775564 has 12 divisors (see below), whose sum is σ = 45299527224. Its totient is φ = 12562053504.

The previous prime is 25504775563. The next prime is 25504775581. The reversal of 25504775564 is 46557740552.

It is not an unprimeable number, because it can be changed into a prime (25504775563) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 47583269 + ... + 47583804.

It is an arithmetic number, because the mean of its divisors is an integer number (3774960602).

Almost surely, 2^25504775564 is an apocalyptic number.

It is an amenable number.

25504775564 is a deficient number, since it is larger than the sum of its proper divisors (19794751660).

25504775564 is a wasteful number, since it uses less digits than its factorization.

25504775564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95167144 (or 95167142 counting only the distinct ones).

The product of its (nonzero) digits is 5880000, while the sum is 50.

The spelling of 25504775564 in words is "twenty-five billion, five hundred four million, seven hundred seventy-five thousand, five hundred sixty-four".