25057572315021 has 12 divisors (see below), whose sum is σ = 36194335449948. Its totient is φ = 16705018520064.

The previous prime is 25057572315007. The next prime is 25057572315029. The reversal of 25057572315021 is 12051327575052.

25057572315021 is a `hidden beast` number, since 2 + 5 + 0 + 5 + 7 + 572 + 3 + 1 + 50 + 21 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 9801626870025 + 15255945444996 = 3130755^2 + 3905886^2 .

It is not a de Polignac number, because 25057572315021 - 2⁷ = 25057572314893 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25057572315029) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3675501 + ... + 7976493.

It is an arithmetic number, because the mean of its divisors is an integer number (3016194620829).

Almost surely, 2^{25057572315021} is an apocalyptic number.

It is an amenable number.

25057572315021 is a deficient number, since it is larger than the sum of its proper divisors (11136763134927).

25057572315021 is a wasteful number, since it uses less digits than its factorization.

25057572315021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4948332 (or 4948329 counting only the distinct ones).

The product of its (nonzero) digits is 735000, while the sum is 45.

The spelling of 25057572315021 in words is "twenty-five trillion, fifty-seven billion, five hundred seventy-two million, three hundred fifteen thousand, twenty-one".