12815325 has 18 divisors (see below), whose sum is σ = 22954074. Its totient is φ = 6834720.

The previous prime is 12815317. The next prime is 12815353. The reversal of 12815325 is 52351821.

It is a happy number.

12815325 is a `hidden beast` number, since 128 + 1 + 532 + 5 = 666.

It can be written as a sum of positive squares in 3 ways, for example, as 6084 + 12809241 = 78^2 + 3579^2 .

It is not a de Polignac number, because 12815325 - 2³ = 12815317 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 28254 + ... + 28703.

Almost surely, 2^12815325 is an apocalyptic number.

12815325 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12815325 is a deficient number, since it is larger than the sum of its proper divisors (10138749).

12815325 is a wasteful number, since it uses less digits than its factorization.

12815325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56973 (or 56965 counting only the distinct ones).

The product of its digits is 2400, while the sum is 27.

The square root of 12815325 is about 3579.8498571868. The cubic root of 12815325 is about 234.0147371827.

The spelling of 12815325 in words is "twelve million, eight hundred fifteen thousand, three hundred twenty-five".