25123315 has 16 divisors (see below), whose sum is σ = 34930368. Its totient is φ = 16989696.

The previous prime is 25123303. The next prime is 25123369. The reversal of 25123315 is 51332152.

It is a cyclic number.

It is not a de Polignac number, because 25123315 - 2²¹ = 23026163 is a prime.

It is a Duffinian number.

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, 2362 + ... + 7471.

It is an arithmetic number, because the mean of its divisors is an integer number (2183148).

Almost surely, 2^25123315 is an apocalyptic number.

25123315 is a deficient number, since it is larger than the sum of its proper divisors (9807053).

25123315 is an equidigital number, since it uses as much as digits as its factorization.

25123315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9918.

The product of its digits is 900, while the sum is 22.

The square root of 25123315 is about 5012.3163307996. The cubic root of 25123315 is about 292.8817524998.

Adding to 25123315 its reverse (51332152), we get a palindrome (76455467).

The spelling of 25123315 in words is "twenty-five million, one hundred twenty-three thousand, three hundred fifteen".