25253304400 has 60 divisors (see below), whose sum is σ = 62763198300. Its totient is φ = 9752995840.

The previous prime is 25253304367. The next prime is 25253304443. The reversal of 25253304400 is 440335252.

It can be written as a sum of positive squares in 6 ways, for example, as 5046113296 + 20207191104 = 71036^2 + 142152^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1076905 + ... + 1100104.

It is an arithmetic number, because the mean of its divisors is an integer number (1046053305).

Almost surely, 2^25253304400 is an apocalyptic number.

25253304400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25253304400 is an abundant number, since it is smaller than the sum of its proper divisors (37509893900).

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

25253304400 is a wasteful number, since it uses less digits than its factorization.

25253304400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2177056 (or 2177045 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 28.

Adding to 25253304400 its reverse (440335252), we get a palindrome (25693639652).

The spelling of 25253304400 in words is "twenty-five billion, two hundred fifty-three million, three hundred four thousand, four hundred".