25911637713413 has 2 divisors, whose sum is σ = 25911637713414. Its totient is φ = 25911637713412.

The previous prime is 25911637713343. The next prime is 25911637713457. The reversal of 25911637713413 is 31431773611952.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 24391923237124 + 1519714476289 = 4938818^2 + 1232767^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25911637713413 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25911637713113) 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, 12955818856706 + 12955818856707.

It is an arithmetic number, because the mean of its divisors is an integer number (12955818856707).

Almost surely, 2^{25911637713413} is an apocalyptic number.

It is an amenable number.

25911637713413 is a deficient number, since it is larger than the sum of its proper divisors (1).

25911637713413 is an equidigital number, since it uses as much as digits as its factorization.

25911637713413 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2857680, while the sum is 53.

The spelling of 25911637713413 in words is "twenty-five trillion, nine hundred eleven billion, six hundred thirty-seven million, seven hundred thirteen thousand, four hundred thirteen".