25161315 has 16 divisors (see below), whose sum is σ = 40675488. Its totient is φ = 13280256.

The previous prime is 25161307. The next prime is 25161329. The reversal of 25161315 is 51316152.

It is not a de Polignac number, because 25161315 - 2³ = 25161307 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7192 + ... + 10101.

It is an arithmetic number, because the mean of its divisors is an integer number (2542218).

Almost surely, 2^25161315 is an apocalyptic number.

25161315 is a deficient number, since it is larger than the sum of its proper divisors (15514173).

25161315 is a wasteful number, since it uses less digits than its factorization.

25161315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17398.

The product of its digits is 900, while the sum is 24.

The square root of 25161315 is about 5016.1055610902. The cubic root of 25161315 is about 293.0293431612.

Adding to 25161315 its reverse (51316152), we get a palindrome (76477467).

The spelling of 25161315 in words is "twenty-five million, one hundred sixty-one thousand, three hundred fifteen".