25523908704 has 480 divisors, whose sum is σ = 92207808000. Its totient is φ = 6904154880.

The previous prime is 25523908691. The next prime is 25523908733. The reversal of 25523908704 is 40780932552.

25523908704 is a `hidden beast` number, since 2 + 552 + 3 + 90 + 8 + 7 + 0 + 4 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 25523908704.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 16891309 + ... + 16892819.

It is an arithmetic number, because the mean of its divisors is an integer number (192099600).

Almost surely, 2^25523908704 is an apocalyptic number.

25523908704 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25523908704, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (46103904000).

25523908704 is an abundant number, since it is smaller than the sum of its proper divisors (66683899296).

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

25523908704 is a wasteful number, since it uses less digits than its factorization.

25523908704 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1573 (or 1542 counting only the distinct ones).

The product of its (nonzero) digits is 604800, while the sum is 45.

The spelling of 25523908704 in words is "twenty-five billion, five hundred twenty-three million, nine hundred eight thousand, seven hundred four".