25996244117 has 2 divisors, whose sum is σ = 25996244118. Its totient is φ = 25996244116.

The previous prime is 25996244069. The next prime is 25996244137. The reversal of 25996244117 is 71144269952.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 23679362161 + 2316881956 = 153881^2 + 48134^2 .

It is a cyclic number.

It is not a de Polignac number, because 25996244117 - 2¹⁶ = 25996178581 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25996244137) 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, 12998122058 + 12998122059.

It is an arithmetic number, because the mean of its divisors is an integer number (12998122059).

Almost surely, 2^25996244117 is an apocalyptic number.

It is an amenable number.

25996244117 is a deficient number, since it is larger than the sum of its proper divisors (1).

25996244117 is an equidigital number, since it uses as much as digits as its factorization.

25996244117 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1088640, while the sum is 50.

The spelling of 25996244117 in words is "twenty-five billion, nine hundred ninety-six million, two hundred forty-four thousand, one hundred seventeen".