25431022402423 has 8 divisors (see below), whose sum is σ = 27972213973776. Its totient is φ = 23119111273720.

The previous prime is 25431022402397. The next prime is 25431022402427. The reversal of 25431022402423 is 32420422013452.

It is not a de Polignac number, because 25431022402423 - 2¹³ = 25431022394231 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25431022402427) 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, 9553350436 + ... + 9553353097.

It is an arithmetic number, because the mean of its divisors is an integer number (3496526746722).

Almost surely, 2^{25431022402423} is an apocalyptic number.

25431022402423 is a deficient number, since it is larger than the sum of its proper divisors (2541191571353).

25431022402423 is an equidigital number, since it uses as much as digits as its factorization.

25431022402423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19106703566 (or 19106703544 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 34.

Adding to 25431022402423 its reverse (32420422013452), we get a palindrome (57851444415875).

The spelling of 25431022402423 in words is "twenty-five trillion, four hundred thirty-one billion, twenty-two million, four hundred two thousand, four hundred twenty-three".