25431040422 has 40 divisors (see below), whose sum is σ = 57918560832. Its totient is φ = 8338042800.

The previous prime is 25431040417. The next prime is 25431040463. The reversal of 25431040422 is 22404013452.

25431040422 is a `hidden beast` number, since 254 + 3 + 1 + 0 + 404 + 2 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1276854 + ... + 1296617.

Almost surely, 2^25431040422 is an apocalyptic number.

25431040422 is an abundant number, since it is smaller than the sum of its proper divisors (32487520410).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25431040422 is a wasteful number, since it uses less digits than its factorization.

25431040422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2573546 (or 2573537 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 27.

Adding to 25431040422 its reverse (22404013452), we get a palindrome (47835053874).

The spelling of 25431040422 in words is "twenty-five billion, four hundred thirty-one million, forty thousand, four hundred twenty-two".