25213312344 has 64 divisors (see below), whose sum is σ = 68793229440. Its totient is φ = 7637103360.

The previous prime is 25213312339. The next prime is 25213312351. The reversal of 25213312344 is 44321331252.

It is a super-2 number, since 2×25213312344² (a number of 22 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, 631932 + ... + 670644.

It is an arithmetic number, because the mean of its divisors is an integer number (1074894210).

Almost surely, 2^25213312344 is an apocalyptic number.

25213312344 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

25213312344 is an abundant number, since it is smaller than the sum of its proper divisors (43579917096).

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

25213312344 is a wasteful number, since it uses less digits than its factorization.

25213312344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41200 (or 41196 counting only the distinct ones).

The product of its digits is 17280, while the sum is 30.

Adding to 25213312344 its reverse (44321331252), we get a palindrome (69534643596).

The spelling of 25213312344 in words is "twenty-five billion, two hundred thirteen million, three hundred twelve thousand, three hundred forty-four".