25913184791089 has 2 divisors, whose sum is σ = 25913184791090. Its totient is φ = 25913184791088.

The previous prime is 25913184791077. The next prime is 25913184791149. The reversal of 25913184791089 is 98019748131952.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14865651360000 + 11047533431089 = 3855600^2 + 3323783^2 .

It is a cyclic number.

It is not a de Polignac number, because 25913184791089 - 2²⁹ = 25912647920177 is a prime.

It is not a weakly prime, because it can be changed into another prime (25913184791029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12956592395544 + 12956592395545.

It is an arithmetic number, because the mean of its divisors is an integer number (12956592395545).

Almost surely, 2^{25913184791089} is an apocalyptic number.

It is an amenable number.

25913184791089 is a deficient number, since it is larger than the sum of its proper divisors (1).

25913184791089 is an equidigital number, since it uses as much as digits as its factorization.

25913184791089 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 39191040, while the sum is 67.

The spelling of 25913184791089 in words is "twenty-five trillion, nine hundred thirteen billion, one hundred eighty-four million, seven hundred ninety-one thousand, eighty-nine".