25668400 has 30 divisors (see below), whose sum is σ = 61669292. Its totient is φ = 10267200.

The previous prime is 25668397. The next prime is 25668427. The reversal of 25668400 is 486652.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 31686 + ... + 32485.

Almost surely, 2^25668400 is an apocalyptic number.

25668400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25668400 is an abundant number, since it is smaller than the sum of its proper divisors (36000892).

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

25668400 is a wasteful number, since it uses less digits than its factorization.

25668400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64189 (or 64178 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 31.

The square root of 25668400 is about 5066.3991157429. The cubic root of 25668400 is about 294.9847737042.

The spelling of 25668400 in words is "twenty-five million, six hundred sixty-eight thousand, four hundred".