25664531312310 has 32 divisors (see below), whose sum is σ = 67194409254912. Its totient is φ = 6221704560480.

The previous prime is 25664531312221. The next prime is 25664531312327. The reversal of 25664531312310 is 1321313546652.

It is a happy number.

It is a super-2 number, since 2×25664531312310² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38885653174 + ... + 38885653833.

It is an arithmetic number, because the mean of its divisors is an integer number (2099825289216).

Almost surely, 2^{25664531312310} is an apocalyptic number.

25664531312310 is an abundant number, since it is smaller than the sum of its proper divisors (41529877942602).

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

25664531312310 is a wasteful number, since it uses less digits than its factorization.

25664531312310 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77771307028.

The product of its (nonzero) digits is 388800, while the sum is 42.

Adding to 25664531312310 its reverse (1321313546652), we get a palindrome (26985844858962).

The spelling of 25664531312310 in words is "twenty-five trillion, six hundred sixty-four billion, five hundred thirty-one million, three hundred twelve thousand, three hundred ten".