25596689191 has 2 divisors, whose sum is σ = 25596689192. Its totient is φ = 25596689190.

The previous prime is 25596689143. The next prime is 25596689203. The reversal of 25596689191 is 19198669552.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25596689191 - 2²³ = 25588300583 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25596689101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12798344595 + 12798344596.

It is an arithmetic number, because the mean of its divisors is an integer number (12798344596).

Almost surely, 2^25596689191 is an apocalyptic number.

25596689191 is a deficient number, since it is larger than the sum of its proper divisors (1).

25596689191 is an equidigital number, since it uses as much as digits as its factorization.

25596689191 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10497600, while the sum is 61.

The spelling of 25596689191 in words is "twenty-five billion, five hundred ninety-six million, six hundred eighty-nine thousand, one hundred ninety-one".