25917764430 has 64 divisors (see below), whose sum is σ = 62726400000. Its totient is φ = 6853292160.

The previous prime is 25917764413. The next prime is 25917764441. The reversal of 25917764430 is 3446771952.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 25917764430.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9426696 + ... + 9429444.

It is an arithmetic number, because the mean of its divisors is an integer number (980100000).

Almost surely, 2^25917764430 is an apocalyptic number.

25917764430 is an abundant number, since it is smaller than the sum of its proper divisors (36808635570).

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

25917764430 is a wasteful number, since it uses less digits than its factorization.

25917764430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5289.

The product of its (nonzero) digits is 1270080, while the sum is 48.

The spelling of 25917764430 in words is "twenty-five billion, nine hundred seventeen million, seven hundred sixty-four thousand, four hundred thirty".