12661325 has 12 divisors (see below), whose sum is σ = 15936480. Its totient is φ = 9976560.

The previous prime is 12661321. The next prime is 12661357. The reversal of 12661325 is 52316621.

It is not a de Polignac number, because 12661325 - 2² = 12661321 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 12661294 and 12661303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12661321) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2105 + ... + 5454.

It is an arithmetic number, because the mean of its divisors is an integer number (1328040).

Almost surely, 2^12661325 is an apocalyptic number.

It is an amenable number.

12661325 is a deficient number, since it is larger than the sum of its proper divisors (3275155).

12661325 is an equidigital number, since it uses as much as digits as its factorization.

12661325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7636 (or 7631 counting only the distinct ones).

The product of its digits is 2160, while the sum is 26.

The square root of 12661325 is about 3558.2755654952. The cubic root of 12661325 is about 233.0735828309.

Adding to 12661325 its reverse (52316621), we get a palindrome (64977946).

The spelling of 12661325 in words is "twelve million, six hundred sixty-one thousand, three hundred twenty-five".