12664225115 has 4 divisors (see below), whose sum is σ = 15197070144. Its totient is φ = 10131380088.

The previous prime is 12664225031. The next prime is 12664225117. The reversal of 12664225115 is 51152246621.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 51152246621 = 7 ⋅7307463803.

It is a cyclic number.

It is not a de Polignac number, because 12664225115 - 2²² = 12660030811 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12664225117) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1266422507 + ... + 1266422516.

It is an arithmetic number, because the mean of its divisors is an integer number (3799267536).

Almost surely, 2^12664225115 is an apocalyptic number.

12664225115 is a deficient number, since it is larger than the sum of its proper divisors (2532845029).

12664225115 is an equidigital number, since it uses as much as digits as its factorization.

12664225115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2532845028.

The product of its digits is 28800, while the sum is 35.

The spelling of 12664225115 in words is "twelve billion, six hundred sixty-four million, two hundred twenty-five thousand, one hundred fifteen".