25213492800 has 126 divisors (see below), whose sum is σ = 89614757778. Its totient is φ = 6723594240.

The previous prime is 25213492769. The next prime is 25213492813. The reversal of 25213492800 is 829431252.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 2141097984 + 23072394816 = 46272^2 + 151896^2 .

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 861069 + ... + 889868.

Almost surely, 2^25213492800 is an apocalyptic number.

25213492800 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25213492800 is an abundant number, since it is smaller than the sum of its proper divisors (64401264978).

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

25213492800 is a wasteful number, since it uses less digits than its factorization.

25213492800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1750965 (or 1750947 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The spelling of 25213492800 in words is "twenty-five billion, two hundred thirteen million, four hundred ninety-two thousand, eight hundred".