25573013568 has 84 divisors (see below), whose sum is σ = 73324112940. Its totient is φ = 8521583616.

The previous prime is 25573013567. The next prime is 25573013569. The reversal of 25573013568 is 86531037552.

25573013568 is a `hidden beast` number, since 2 + 5 + 5 + 73 + 0 + 13 + 568 = 666.

It is an interprime number because it is at equal distance from previous prime (25573013567) and next prime (25573013569).

It can be written as a sum of positive squares in 2 ways, for example, as 9739321344 + 15833692224 = 98688^2 + 125832^2 .

It is a super-2 number, since 2×25573013568² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (25573013567) 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, 2596878 + ... + 2606706.

Almost surely, 2^25573013568 is an apocalyptic number.

It is an amenable number.

25573013568 is an abundant number, since it is smaller than the sum of its proper divisors (47751099372).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25573013568 is a wasteful number, since it uses less digits than its factorization.

25573013568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14364 (or 14351 counting only the distinct ones).

The product of its (nonzero) digits is 756000, while the sum is 45.

The spelling of 25573013568 in words is "twenty-five billion, five hundred seventy-three million, thirteen thousand, five hundred sixty-eight".