12656725937 has 2 divisors, whose sum is σ = 12656725938. Its totient is φ = 12656725936.

The previous prime is 12656725933. The next prime is 12656725943. The reversal of 12656725937 is 73952765621.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12351210496 + 305515441 = 111136^2 + 17479^2 .

It is a cyclic number.

It is not a de Polignac number, because 12656725937 - 2² = 12656725933 is a prime.

It is a super-2 number, since 2×12656725937² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (12656725933) 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, 6328362968 + 6328362969.

It is an arithmetic number, because the mean of its divisors is an integer number (6328362969).

Almost surely, 2^12656725937 is an apocalyptic number.

It is an amenable number.

12656725937 is a deficient number, since it is larger than the sum of its proper divisors (1).

12656725937 is an equidigital number, since it uses as much as digits as its factorization.

12656725937 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4762800, while the sum is 53.

The spelling of 12656725937 in words is "twelve billion, six hundred fifty-six million, seven hundred twenty-five thousand, nine hundred thirty-seven".