25271916 has 12 divisors (see below), whose sum is σ = 58967832. Its totient is φ = 8423968.

The previous prime is 25271903. The next prime is 25271941. The reversal of 25271916 is 61917252.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×25271916² = 1277339476622112, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1052985 + ... + 1053008.

It is an arithmetic number, because the mean of its divisors is an integer number (4913986).

Almost surely, 2^25271916 is an apocalyptic number.

It is an amenable number.

25271916 is an abundant number, since it is smaller than the sum of its proper divisors (33695916).

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

25271916 is a wasteful number, since it uses less digits than its factorization.

25271916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2106000 (or 2105998 counting only the distinct ones).

The product of its digits is 7560, while the sum is 33.

The square root of 25271916 is about 5027.1180610763. The cubic root of 25271916 is about 293.4580696542.

The spelling of 25271916 in words is "twenty-five million, two hundred seventy-one thousand, nine hundred sixteen".