12512569 has 2 divisors, whose sum is σ = 12512570. Its totient is φ = 12512568.

The previous prime is 12512557. The next prime is 12512579. The reversal of 12512569 is 96521521.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10791225 + 1721344 = 3285^2 + 1312^2 .

It is an emirp because it is prime and its reverse (96521521) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12512569 - 2⁹ = 12512057 is a prime.

It is a super-2 number, since 2×12512569² = 313128765959522, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12512569.

It is not a weakly prime, because it can be changed into another prime (12512509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6256284 + 6256285.

It is an arithmetic number, because the mean of its divisors is an integer number (6256285).

Almost surely, 2^12512569 is an apocalyptic number.

It is an amenable number.

12512569 is a deficient number, since it is larger than the sum of its proper divisors (1).

12512569 is an equidigital number, since it uses as much as digits as its factorization.

12512569 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5400, while the sum is 31.

The square root of 12512569 is about 3537.3109843496. The cubic root of 12512569 is about 232.1572024632.

The spelling of 12512569 in words is "twelve million, five hundred twelve thousand, five hundred sixty-nine".