12618625 has 24 divisors (see below), whose sum is σ = 16571880. Its totient is φ = 9581600.

The previous prime is 12618623. The next prime is 12618629. The reversal of 12618625 is 52681621.

It can be written as a sum of positive squares in 4 ways, for example, as 501264 + 12117361 = 708^2 + 3481^2 .

It is not a de Polignac number, because 12618625 - 2¹ = 12618623 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12618623) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 213846 + ... + 213904.

It is an arithmetic number, because the mean of its divisors is an integer number (690495).

Almost surely, 2^12618625 is an apocalyptic number.

It is an amenable number.

12618625 is a deficient number, since it is larger than the sum of its proper divisors (3953255).

12618625 is an frugal number, since it uses more digits than its factorization.

12618625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162 (or 93 counting only the distinct ones).

The product of its digits is 5760, while the sum is 31.

The square root of 12618625 is about 3552.2704007437. The cubic root of 12618625 is about 232.8112761373.

The spelling of 12618625 in words is "twelve million, six hundred eighteen thousand, six hundred twenty-five".