12506904589 has 2 divisors, whose sum is σ = 12506904590. Its totient is φ = 12506904588.

The previous prime is 12506904587. The next prime is 12506904629. The reversal of 12506904589 is 98540960521.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12072515625 + 434388964 = 109875^2 + 20842^2 .

It is an emirp because it is prime and its reverse (98540960521) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12506904589 - 2¹ = 12506904587 is a prime.

Together with 12506904587, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12506904583) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6253452294 + 6253452295.

It is an arithmetic number, because the mean of its divisors is an integer number (6253452295).

Almost surely, 2^12506904589 is an apocalyptic number.

It is an amenable number.

12506904589 is a deficient number, since it is larger than the sum of its proper divisors (1).

12506904589 is an equidigital number, since it uses as much as digits as its factorization.

12506904589 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 777600, while the sum is 49.

The spelling of 12506904589 in words is "twelve billion, five hundred six million, nine hundred four thousand, five hundred eighty-nine".