25631113430 has 32 divisors (see below), whose sum is σ = 52299928800. Its totient is φ = 8965700352.

The previous prime is 25631113427. The next prime is 25631113477. The reversal of 25631113430 is 3431113652.

It is a junction number, because it is equal to n+sod(n) for n = 25631113393 and 25631113402.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5186015 + ... + 5190954.

It is an arithmetic number, because the mean of its divisors is an integer number (1634372775).

Almost surely, 2^25631113430 is an apocalyptic number.

25631113430 is an abundant number, since it is smaller than the sum of its proper divisors (26668815370).

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

25631113430 is a wasteful number, since it uses less digits than its factorization.

25631113430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10377008.

The product of its (nonzero) digits is 6480, while the sum is 29.

The spelling of 25631113430 in words is "twenty-five billion, six hundred thirty-one million, one hundred thirteen thousand, four hundred thirty".