25651302231 has 16 divisors (see below), whose sum is σ = 34594944480. Its totient is φ = 16904363520.

The previous prime is 25651302221. The next prime is 25651302233. The reversal of 25651302231 is 13220315652.

It is not a de Polignac number, because 25651302231 - 2¹⁵ = 25651269463 is a prime.

It is a super-2 number, since 2×25651302231² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25651302233) 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, 1275091 + ... + 1295051.

It is an arithmetic number, because the mean of its divisors is an integer number (2162184030).

Almost surely, 2^25651302231 is an apocalyptic number.

25651302231 is a deficient number, since it is larger than the sum of its proper divisors (8943642249).

25651302231 is a wasteful number, since it uses less digits than its factorization.

25651302231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24866.

The product of its (nonzero) digits is 10800, while the sum is 30.

Adding to 25651302231 its reverse (13220315652), we get a palindrome (38871617883).

The spelling of 25651302231 in words is "twenty-five billion, six hundred fifty-one million, three hundred two thousand, two hundred thirty-one".