25513339904 has 132 divisors (see below), whose sum is σ = 57432695376. Its totient is φ = 11260305408.

The previous prime is 25513339867. The next prime is 25513339909. The reversal of 25513339904 is 40993331552.

It is not an unprimeable number, because it can be changed into a prime (25513339909) 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, 7040237 + ... + 7043859.

Almost surely, 2^25513339904 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25513339904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28716347688).

25513339904 is an abundant number, since it is smaller than the sum of its proper divisors (31919355472).

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

25513339904 is a wasteful number, since it uses less digits than its factorization.

25513339904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3702 (or 3661 counting only the distinct ones).

The product of its (nonzero) digits is 437400, while the sum is 44.

The spelling of 25513339904 in words is "twenty-five billion, five hundred thirteen million, three hundred thirty-nine thousand, nine hundred four".