25831128255 has 8 divisors (see below), whose sum is σ = 41329805232. Its totient is φ = 13776601728.

The previous prime is 25831128251. The next prime is 25831128263. The reversal of 25831128255 is 55282113852.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 25831128255 - 2² = 25831128251 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25831128251) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 861037594 + ... + 861037623.

It is an arithmetic number, because the mean of its divisors is an integer number (5166225654).

Almost surely, 2^25831128255 is an apocalyptic number.

25831128255 is a deficient number, since it is larger than the sum of its proper divisors (15498676977).

25831128255 is a wasteful number, since it uses less digits than its factorization.

25831128255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1722075225.

The product of its digits is 192000, while the sum is 42.

The spelling of 25831128255 in words is "twenty-five billion, eight hundred thirty-one million, one hundred twenty-eight thousand, two hundred fifty-five".