25768777159 has 2 divisors, whose sum is σ = 25768777160. Its totient is φ = 25768777158.

The previous prime is 25768777147. The next prime is 25768777207. The reversal of 25768777159 is 95177786752.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25768777159 - 2¹⁹ = 25768252871 is a prime.

It is a super-3 number, since 3×25768777159³ (a number of 32 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a self number, because there is not a number n which added to its sum of digits gives 25768777159.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25768777459) 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, 12884388579 + 12884388580.

It is an arithmetic number, because the mean of its divisors is an integer number (12884388580).

Almost surely, 2^25768777159 is an apocalyptic number.

25768777159 is a deficient number, since it is larger than the sum of its proper divisors (1).

25768777159 is an equidigital number, since it uses as much as digits as its factorization.

25768777159 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 51861600, while the sum is 64.

The spelling of 25768777159 in words is "twenty-five billion, seven hundred sixty-eight million, seven hundred seventy-seven thousand, one hundred fifty-nine".