12505740893 has 2 divisors, whose sum is σ = 12505740894. Its totient is φ = 12505740892.

The previous prime is 12505740859. The next prime is 12505740899. The reversal of 12505740893 is 39804750521.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12498569209 + 7171684 = 111797^2 + 2678^2 .

It is a cyclic number.

It is not a de Polignac number, because 12505740893 - 2¹⁴ = 12505724509 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12505740899) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6252870446 + 6252870447.

It is an arithmetic number, because the mean of its divisors is an integer number (6252870447).

Almost surely, 2^12505740893 is an apocalyptic number.

It is an amenable number.

12505740893 is a deficient number, since it is larger than the sum of its proper divisors (1).

12505740893 is an equidigital number, since it uses as much as digits as its factorization.

12505740893 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 302400, while the sum is 44.

The spelling of 12505740893 in words is "twelve billion, five hundred five million, seven hundred forty thousand, eight hundred ninety-three".