25431245032 has 32 divisors (see below), whose sum is σ = 47800789920. Its totient is φ = 12684409920.

The previous prime is 25431245027. The next prime is 25431245041. The reversal of 25431245032 is 23054213452.

It is a junction number, because it is equal to n+sod(n) for n = 25431244985 and 25431245003.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8290363 + ... + 8293429.

It is an arithmetic number, because the mean of its divisors is an integer number (1493774685).

Almost surely, 2^25431245032 is an apocalyptic number.

It is an amenable number.

25431245032 is a deficient number, since it is larger than the sum of its proper divisors (22369544888).

25431245032 is a wasteful number, since it uses less digits than its factorization.

25431245032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5281 (or 5277 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 31.

Adding to 25431245032 its reverse (23054213452), we get a palindrome (48485458484).

The spelling of 25431245032 in words is "twenty-five billion, four hundred thirty-one million, two hundred forty-five thousand, thirty-two".