25172590 has 16 divisors (see below), whose sum is σ = 45932688. Its totient is φ = 9930816.

The previous prime is 25172573. The next prime is 25172599. The reversal of 25172590 is 9527152.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25172599) 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, 16512 + ... + 17971.

It is an arithmetic number, because the mean of its divisors is an integer number (2870793).

Almost surely, 2^25172590 is an apocalyptic number.

25172590 is a deficient number, since it is larger than the sum of its proper divisors (20760098).

25172590 is a wasteful number, since it uses less digits than its factorization.

25172590 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34563.

The product of its (nonzero) digits is 6300, while the sum is 31.

The square root of 25172590 is about 5017.2293150702. The cubic root of 25172590 is about 293.0731062749.

The spelling of 25172590 in words is "twenty-five million, one hundred seventy-two thousand, five hundred ninety".