25664622646652 has 24 divisors (see below), whose sum is σ = 49586412218112. Its totient is φ = 11525186510000.

The previous prime is 25664622646573. The next prime is 25664622646661.

25664622646652 is nontrivially palindromic in base 10.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3513772724 + ... + 3513780027.

It is an arithmetic number, because the mean of its divisors is an integer number (2066100509088).

Almost surely, 2^{25664622646652} is an apocalyptic number.

25664622646652 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

25664622646652 is a deficient number, since it is larger than the sum of its proper divisors (23921789571460).

25664622646652 is a wasteful number, since it uses less digits than its factorization.

25664622646652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7027552849 (or 7027552847 counting only the distinct ones).

The product of its digits is 298598400, while the sum is 62.

The spelling of 25664622646652 in words is "twenty-five trillion, six hundred sixty-four billion, six hundred twenty-two million, six hundred forty-six thousand, six hundred fifty-two".