25640004652 has 12 divisors (see below), whose sum is σ = 45305640016. Its totient is φ = 12695536080.

The previous prime is 25640004641. The next prime is 25640004661.

25640004652 is nontrivially palindromic in base 10.

It is a super-2 number, since 2×25640004652² (a number of 22 digits) contains 22 as substring.

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 3 ways as a sum of consecutive naturals, for example, 31116099 + ... + 31116922.

Almost surely, 2^25640004652 is an apocalyptic number.

It is an amenable number.

25640004652 is a deficient number, since it is larger than the sum of its proper divisors (19665635364).

25640004652 is a wasteful number, since it uses less digits than its factorization.

25640004652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62233128 (or 62233126 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 34.

It can be divided in two parts, 2564000 and 4652, that added together give a palindrome (2568652).

The spelling of 25640004652 in words is "twenty-five billion, six hundred forty million, four thousand, six hundred fifty-two".