25604812794 has 64 divisors (see below), whose sum is σ = 58919685120. Its totient is φ = 7336368000.

The previous prime is 25604812781. The next prime is 25604812817. The reversal of 25604812794 is 49721840652.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 633739 + ... + 672929.

It is an arithmetic number, because the mean of its divisors is an integer number (920620080).

Almost surely, 2^25604812794 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25604812794, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29459842560).

25604812794 is an abundant number, since it is smaller than the sum of its proper divisors (33314872326).

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

25604812794 is a wasteful number, since it uses less digits than its factorization.

25604812794 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39747.

The product of its (nonzero) digits is 967680, while the sum is 48.

The spelling of 25604812794 in words is "twenty-five billion, six hundred four million, eight hundred twelve thousand, seven hundred ninety-four".