12515230081 has 2 divisors, whose sum is σ = 12515230082. Its totient is φ = 12515230080.

The previous prime is 12515230043. The next prime is 12515230129. The reversal of 12515230081 is 18003251521.

12515230081 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11741889600 + 773340481 = 108360^2 + 27809^2 .

It is a cyclic number.

It is not a de Polignac number, because 12515230081 - 2¹³ = 12515221889 is a prime.

It is a super-2 number, since 2×12515230081² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (12515230381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6257615040 + 6257615041.

It is an arithmetic number, because the mean of its divisors is an integer number (6257615041).

Almost surely, 2^12515230081 is an apocalyptic number.

It is an amenable number.

12515230081 is a deficient number, since it is larger than the sum of its proper divisors (1).

12515230081 is an equidigital number, since it uses as much as digits as its factorization.

12515230081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2400, while the sum is 28.

The spelling of 12515230081 in words is "twelve billion, five hundred fifteen million, two hundred thirty thousand, eighty-one".