12515963 has 2 divisors, whose sum is σ = 12515964. Its totient is φ = 12515962.

The previous prime is 12515957. The next prime is 12515999. The reversal of 12515963 is 36951521.

It is a weak prime.

It is an emirp because it is prime and its reverse (36951521) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12515963 - 2¹⁴ = 12499579 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (12515903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6257981 + 6257982.

It is an arithmetic number, because the mean of its divisors is an integer number (6257982).

Almost surely, 2^12515963 is an apocalyptic number.

12515963 is a deficient number, since it is larger than the sum of its proper divisors (1).

12515963 is an equidigital number, since it uses as much as digits as its factorization.

12515963 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8100, while the sum is 32.

The square root of 12515963 is about 3537.7906947698. The cubic root of 12515963 is about 232.1781912336.

The spelling of 12515963 in words is "twelve million, five hundred fifteen thousand, nine hundred sixty-three".