25431022402424 has 16 divisors (see below), whose sum is σ = 47968694953200. Its totient is φ = 12639370414912.

The previous prime is 25431022402397. The next prime is 25431022402427. The reversal of 25431022402424 is 42420422013452.

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 3 ways as a sum of consecutive naturals, for example, 9517596869 + ... + 9517599540.

It is an arithmetic number, because the mean of its divisors is an integer number (2998043434575).

Almost surely, 2^{25431022402424} is an apocalyptic number.

It is an amenable number.

25431022402424 is a deficient number, since it is larger than the sum of its proper divisors (22537672550776).

25431022402424 is a wasteful number, since it uses less digits than its factorization.

25431022402424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19035196582 (or 19035196578 counting only the distinct ones).

The product of its (nonzero) digits is 122880, while the sum is 35.

Adding to 25431022402424 its reverse (42420422013452), we get a palindrome (67851444415876).

The spelling of 25431022402424 in words is "twenty-five trillion, four hundred thirty-one billion, twenty-two million, four hundred two thousand, four hundred twenty-four".