25420800 has 132 divisors (see below), whose sum is σ = 84270896. Its totient is φ = 6758400.

The previous prime is 25420789. The next prime is 25420823. The reversal of 25420800 is 802452.

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, 76635 + ... + 76965.

Almost surely, 2^25420800 is an apocalyptic number.

25420800 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25420800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42135448).

25420800 is an abundant number, since it is smaller than the sum of its proper divisors (58850096).

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

25420800 is a wasteful number, since it uses less digits than its factorization.

25420800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 364 (or 341 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 21.

The square root of 25420800 is about 5041.9044021084. The cubic root of 25420800 is about 294.0332231417.

The spelling of 25420800 in words is "twenty-five million, four hundred twenty thousand, eight hundred".