12818525 has 6 divisors (see below), whose sum is σ = 15895002. Its totient is φ = 10254800.

The previous prime is 12818513. The next prime is 12818543. The reversal of 12818525 is 52581821.

It is a happy number.

12818525 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 1026169 + 11792356 = 1013^2 + 3434^2 .

It is not a de Polignac number, because 12818525 - 2¹⁸ = 12556381 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12818491 and 12818500.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 256346 + ... + 256395.

It is an arithmetic number, because the mean of its divisors is an integer number (2649167).

Almost surely, 2^12818525 is an apocalyptic number.

It is an amenable number.

12818525 is a deficient number, since it is larger than the sum of its proper divisors (3076477).

12818525 is an equidigital number, since it uses as much as digits as its factorization.

12818525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 512751 (or 512746 counting only the distinct ones).

The product of its digits is 6400, while the sum is 32.

The square root of 12818525 is about 3580.2967754084. The cubic root of 12818525 is about 234.0342134696.

The spelling of 12818525 in words is "twelve million, eight hundred eighteen thousand, five hundred twenty-five".