25431250412 has 12 divisors (see below), whose sum is σ = 44559570216. Its totient is φ = 12699944640.

The previous prime is 25431250393. The next prime is 25431250463. The reversal of 25431250412 is 21405213452.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3916493 + ... + 3922980.

It is an arithmetic number, because the mean of its divisors is an integer number (3713297518).

Almost surely, 2^25431250412 is an apocalyptic number.

It is an amenable number.

25431250412 is a deficient number, since it is larger than the sum of its proper divisors (19128319804).

25431250412 is a wasteful number, since it uses less digits than its factorization.

25431250412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7840288 (or 7840286 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 29.

Adding to 25431250412 its reverse (21405213452), we get a palindrome (46836463864).

The spelling of 25431250412 in words is "twenty-five billion, four hundred thirty-one million, two hundred fifty thousand, four hundred twelve".