25225592831 has 4 divisors (see below), whose sum is σ = 26039321664. Its totient is φ = 24411864000.

The previous prime is 25225592809. The next prime is 25225592857. The reversal of 25225592831 is 13829552252.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25225592831 is a prime.

It is a super-2 number, since 2×25225592831² (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 (25225592531) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 406864370 + ... + 406864431.

It is an arithmetic number, because the mean of its divisors is an integer number (6509830416).

Almost surely, 2^25225592831 is an apocalyptic number.

25225592831 is a deficient number, since it is larger than the sum of its proper divisors (813728833).

25225592831 is an equidigital number, since it uses as much as digits as its factorization.

25225592831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 813728832.

The product of its digits is 432000, while the sum is 44.

The spelling of 25225592831 in words is "twenty-five billion, two hundred twenty-five million, five hundred ninety-two thousand, eight hundred thirty-one".