25252215 has 32 divisors (see below), whose sum is σ = 41513472. Its totient is φ = 13104000.

The previous prime is 25252193. The next prime is 25252247. The reversal of 25252215 is 51225252.

It is not a de Polignac number, because 25252215 - 2¹⁴ = 25235831 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 139425 + ... + 139605.

It is an arithmetic number, because the mean of its divisors is an integer number (1297296).

Almost surely, 2^25252215 is an apocalyptic number.

25252215 is a deficient number, since it is larger than the sum of its proper divisors (16261257).

25252215 is a wasteful number, since it uses less digits than its factorization.

25252215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 391.

The product of its digits is 2000, while the sum is 24.

The square root of 25252215 is about 5025.1582064647. The cubic root of 25252215 is about 293.3817936752.

Adding to 25252215 its reverse (51225252), we get a palindrome (76477467).

The spelling of 25252215 in words is "twenty-five million, two hundred fifty-two thousand, two hundred fifteen".