25941202591 has 2 divisors, whose sum is σ = 25941202592. Its totient is φ = 25941202590.

The previous prime is 25941202549. The next prime is 25941202603. The reversal of 25941202591 is 19520214952.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25941202591 - 2²³ = 25932813983 is a prime.

It is a super-2 number, since 2×25941202591² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25941202891) 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, 12970601295 + 12970601296.

It is an arithmetic number, because the mean of its divisors is an integer number (12970601296).

Almost surely, 2^25941202591 is an apocalyptic number.

25941202591 is a deficient number, since it is larger than the sum of its proper divisors (1).

25941202591 is an equidigital number, since it uses as much as digits as its factorization.

25941202591 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 64800, while the sum is 40.

The spelling of 25941202591 in words is "twenty-five billion, nine hundred forty-one million, two hundred two thousand, five hundred ninety-one".