25512344432 has 20 divisors (see below), whose sum is σ = 49432709616. Its totient is φ = 12755516160.

The previous prime is 25512344383. The next prime is 25512344467. The reversal of 25512344432 is 23444321552.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 25512344392 and 25512344401.

It is a congruent number.

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, 481832 + ... + 532152.

Almost surely, 2^25512344432 is an apocalyptic number.

It is an amenable number.

25512344432 is a deficient number, since it is larger than the sum of its proper divisors (23920365184).

25512344432 is a wasteful number, since it uses less digits than its factorization.

25512344432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82016 (or 82010 counting only the distinct ones).

The product of its digits is 115200, while the sum is 35.

Adding to 25512344432 its reverse (23444321552), we get a palindrome (48956665984).

The spelling of 25512344432 in words is "twenty-five billion, five hundred twelve million, three hundred forty-four thousand, four hundred thirty-two".