12515652401 has 4 divisors (see below), whose sum is σ = 14303602752. Its totient is φ = 10727702052.

The previous prime is 12515652379. The next prime is 12515652403. The reversal of 12515652401 is 10425651521.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12515652401 - 2¹⁸ = 12515390257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12515652403) 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, 893975165 + ... + 893975178.

It is an arithmetic number, because the mean of its divisors is an integer number (3575900688).

Almost surely, 2^12515652401 is an apocalyptic number.

It is an amenable number.

12515652401 is a deficient number, since it is larger than the sum of its proper divisors (1787950351).

12515652401 is an equidigital number, since it uses as much as digits as its factorization.

12515652401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1787950350.

The product of its (nonzero) digits is 12000, while the sum is 32.

The spelling of 12515652401 in words is "twelve billion, five hundred fifteen million, six hundred fifty-two thousand, four hundred one".