12515277500009 has 2 divisors, whose sum is σ = 12515277500010. Its totient is φ = 12515277500008.

The previous prime is 12515277500003. The next prime is 12515277500051. The reversal of 12515277500009 is 90000577251521.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6348399277609 + 6166878222400 = 2519603^2 + 2483320^2 .

It is a cyclic number.

It is not a de Polignac number, because 12515277500009 - 2⁴⁰ = 11415765872233 is a prime.

It is not a weakly prime, because it can be changed into another prime (12515277500003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6257638750004 + 6257638750005.

It is an arithmetic number, because the mean of its divisors is an integer number (6257638750005).

Almost surely, 2^{12515277500009} is an apocalyptic number.

It is an amenable number.

12515277500009 is a deficient number, since it is larger than the sum of its proper divisors (1).

12515277500009 is an equidigital number, since it uses as much as digits as its factorization.

12515277500009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 220500, while the sum is 44.

The spelling of 12515277500009 in words is "twelve trillion, five hundred fifteen billion, two hundred seventy-seven million, five hundred thousand, nine".