25813052208 has 60 divisors (see below), whose sum is σ = 72556248960. Its totient is φ = 8566766208.

The previous prime is 25813052203. The next prime is 25813052261. The reversal of 25813052208 is 80225031852.

25813052208 is a `hidden beast` number, since 2 + 581 + 3 + 0 + 52 + 20 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (25813052203) 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, 358416 + ... + 424367.

It is an arithmetic number, because the mean of its divisors is an integer number (1209270816).

Almost surely, 2^25813052208 is an apocalyptic number.

It is an amenable number.

25813052208 is an abundant number, since it is smaller than the sum of its proper divisors (46743196752).

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

25813052208 is a wasteful number, since it uses less digits than its factorization.

25813052208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 783026 (or 783017 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 36.

The spelling of 25813052208 in words is "twenty-five billion, eight hundred thirteen million, fifty-two thousand, two hundred eight".