25231500400 has 30 divisors (see below), whose sum is σ = 60618680672. Its totient is φ = 10092600000.

The previous prime is 25231500389. The next prime is 25231500407. The reversal of 25231500400 is 400513252.

It is a super-3 number, since 3×25231500400³ (a number of 32 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25231500407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 31538976 + ... + 31539775.

Almost surely, 2^25231500400 is an apocalyptic number.

25231500400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25231500400 is an abundant number, since it is smaller than the sum of its proper divisors (35387180272).

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

25231500400 is a wasteful number, since it uses less digits than its factorization.

25231500400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63078769 (or 63078758 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 22.

The spelling of 25231500400 in words is "twenty-five billion, two hundred thirty-one million, five hundred thousand, four hundred".