12495074521 has 2 divisors, whose sum is σ = 12495074522. Its totient is φ = 12495074520.

The previous prime is 12495074513. The next prime is 12495074539. The reversal of 12495074521 is 12547059421.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12020052496 + 475022025 = 109636^2 + 21795^2 .

It is a cyclic number.

It is not a de Polignac number, because 12495074521 - 2³ = 12495074513 is a prime.

It is a super-2 number, since 2×12495074521² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (12495074591) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6247537260 + 6247537261.

It is an arithmetic number, because the mean of its divisors is an integer number (6247537261).

Almost surely, 2^12495074521 is an apocalyptic number.

It is an amenable number.

12495074521 is a deficient number, since it is larger than the sum of its proper divisors (1).

12495074521 is an equidigital number, since it uses as much as digits as its factorization.

12495074521 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 100800, while the sum is 40.

The spelling of 12495074521 in words is "twelve billion, four hundred ninety-five million, seventy-four thousand, five hundred twenty-one".