25420872 has 32 divisors (see below), whose sum is σ = 64504800. Its totient is φ = 8346624.

The previous prime is 25420853. The next prime is 25420877. The reversal of 25420872 is 27802452.

It is not an unprimeable number, because it can be changed into a prime (25420877) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6297 + ... + 9512.

It is an arithmetic number, because the mean of its divisors is an integer number (2015775).

Almost surely, 2^25420872 is an apocalyptic number.

It is an amenable number.

25420872 is an abundant number, since it is smaller than the sum of its proper divisors (39083928).

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

25420872 is a wasteful number, since it uses less digits than its factorization.

25420872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15885 (or 15881 counting only the distinct ones).

The product of its (nonzero) digits is 8960, while the sum is 30.

The square root of 25420872 is about 5041.9115422625. The cubic root of 25420872 is about 294.0335007408.

The spelling of 25420872 in words is "twenty-five million, four hundred twenty thousand, eight hundred seventy-two".