25656571159 has 2 divisors, whose sum is σ = 25656571160. Its totient is φ = 25656571158.

The previous prime is 25656571097. The next prime is 25656571163. The reversal of 25656571159 is 95117565652.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25656571159 - 2²¹ = 25654474007 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25656571859) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12828285579 + 12828285580.

It is an arithmetic number, because the mean of its divisors is an integer number (12828285580).

Almost surely, 2^25656571159 is an apocalyptic number.

25656571159 is a deficient number, since it is larger than the sum of its proper divisors (1).

25656571159 is an equidigital number, since it uses as much as digits as its factorization.

25656571159 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2835000, while the sum is 52.

The spelling of 25656571159 in words is "twenty-five billion, six hundred fifty-six million, five hundred seventy-one thousand, one hundred fifty-nine".