25434316231 has 4 divisors (see below), whose sum is σ = 25478860264. Its totient is φ = 25389772200.

The previous prime is 25434316211. The next prime is 25434316273. The reversal of 25434316231 is 13261343452.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 25434316231 - 2²⁷ = 25300098503 is a prime.

It is a super-2 number, since 2×25434316231² (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 (25434316211) 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, 22271160 + ... + 22272301.

It is an arithmetic number, because the mean of its divisors is an integer number (6369715066).

Almost surely, 2^25434316231 is an apocalyptic number.

25434316231 is a deficient number, since it is larger than the sum of its proper divisors (44544033).

25434316231 is an equidigital number, since it uses as much as digits as its factorization.

25434316231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44544032.

The product of its digits is 51840, while the sum is 34.

Adding to 25434316231 its reverse (13261343452), we get a palindrome (38695659683).

The spelling of 25434316231 in words is "twenty-five billion, four hundred thirty-four million, three hundred sixteen thousand, two hundred thirty-one".