25408172 has 12 divisors (see below), whose sum is σ = 44499840. Its totient is φ = 12693936.

The previous prime is 25408139. The next prime is 25408177. The reversal of 25408172 is 27180452.

It is not an unprimeable number, because it can be changed into a prime (25408177) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7538 + ... + 10374.

It is an arithmetic number, because the mean of its divisors is an integer number (3708320).

Almost surely, 2^25408172 is an apocalyptic number.

It is an amenable number.

25408172 is a deficient number, since it is larger than the sum of its proper divisors (19091668).

25408172 is a wasteful number, since it uses less digits than its factorization.

25408172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5080 (or 5078 counting only the distinct ones).

The product of its (nonzero) digits is 4480, while the sum is 29.

The square root of 25408172 is about 5040.6519419615. The cubic root of 25408172 is about 293.9845272373.

The spelling of 25408172 in words is "twenty-five million, four hundred eight thousand, one hundred seventy-two".