25455505231 has 16 divisors (see below), whose sum is σ = 28612027584. Its totient is φ = 22470649344.

The previous prime is 25455505193. The next prime is 25455505301. The reversal of 25455505231 is 13250555452.

It is not a de Polignac number, because 25455505231 - 2⁹ = 25455504719 is a prime.

It is a super-2 number, since 2×25455505231² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25455515231) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2008045 + ... + 2020681.

It is an arithmetic number, because the mean of its divisors is an integer number (1788251724).

Almost surely, 2^25455505231 is an apocalyptic number.

25455505231 is a deficient number, since it is larger than the sum of its proper divisors (3156522353).

25455505231 is a wasteful number, since it uses less digits than its factorization.

25455505231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19410.

The product of its (nonzero) digits is 150000, while the sum is 37.

The spelling of 25455505231 in words is "twenty-five billion, four hundred fifty-five million, five hundred five thousand, two hundred thirty-one".