25312172 has 12 divisors (see below), whose sum is σ = 44466576. Its totient is φ = 12607440.

The previous prime is 25312171. The next prime is 25312207. The reversal of 25312172 is 27121352.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (25312171) 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, 10979 + ... + 13082.

It is an arithmetic number, because the mean of its divisors is an integer number (3705548).

Almost surely, 2^25312172 is an apocalyptic number.

It is an amenable number.

25312172 is a deficient number, since it is larger than the sum of its proper divisors (19154404).

25312172 is a wasteful number, since it uses less digits than its factorization.

25312172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24328 (or 24326 counting only the distinct ones).

The product of its digits is 840, while the sum is 23.

The square root of 25312172 is about 5031.1203523669. The cubic root of 25312172 is about 293.6138048584.

The spelling of 25312172 in words is "twenty-five million, three hundred twelve thousand, one hundred seventy-two".