12656222325 has 24 divisors (see below), whose sum is σ = 23249950400. Its totient is φ = 6749984880.

The previous prime is 12656222323. The next prime is 12656222401. The reversal of 12656222325 is 52322265621.

12656222325 is a `hidden beast` number, since 1 + 2 + 6 + 5 + 622 + 2 + 3 + 25 = 666.

It is not a de Polignac number, because 12656222325 - 2¹ = 12656222323 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12656222325.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12656222321) 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, 9374305 + ... + 9375654.

Almost surely, 2^12656222325 is an apocalyptic number.

12656222325 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12656222325 is a deficient number, since it is larger than the sum of its proper divisors (10593728075).

12656222325 is a wasteful number, since it uses less digits than its factorization.

12656222325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18749978 (or 18749967 counting only the distinct ones).

The product of its digits is 86400, while the sum is 36.

Adding to 12656222325 its reverse (52322265621), we get a palindrome (64978487946).

The spelling of 12656222325 in words is "twelve billion, six hundred fifty-six million, two hundred twenty-two thousand, three hundred twenty-five".