12505740899 has 2 divisors, whose sum is σ = 12505740900. Its totient is φ = 12505740898.

The previous prime is 12505740893. The next prime is 12505740937. The reversal of 12505740899 is 99804750521.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12505740899 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (12505740893) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6252870449 + 6252870450.

It is an arithmetic number, because the mean of its divisors is an integer number (6252870450).

Almost surely, 2^12505740899 is an apocalyptic number.

12505740899 is a deficient number, since it is larger than the sum of its proper divisors (1).

12505740899 is an equidigital number, since it uses as much as digits as its factorization.

12505740899 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 907200, while the sum is 50.

The spelling of 12505740899 in words is "twelve billion, five hundred five million, seven hundred forty thousand, eight hundred ninety-nine".