25881659255 has 4 divisors (see below), whose sum is σ = 31057991112. Its totient is φ = 20705327400.

The previous prime is 25881659201. The next prime is 25881659263. The reversal of 25881659255 is 55295618852.

It is a semiprime because it is the product of two primes.

It is a de Polignac number, because none of the positive numbers 2^k-25881659255 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 25881659255.

It is a congruent number.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 2588165921 + ... + 2588165930.

It is an arithmetic number, because the mean of its divisors is an integer number (7764497778).

Almost surely, 2^25881659255 is an apocalyptic number.

25881659255 is a deficient number, since it is larger than the sum of its proper divisors (5176331857).

25881659255 is an equidigital number, since it uses as much as digits as its factorization.

25881659255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5176331856.

The product of its digits is 8640000, while the sum is 56.

The spelling of 25881659255 in words is "twenty-five billion, eight hundred eighty-one million, six hundred fifty-nine thousand, two hundred fifty-five".