25783998794 has 8 divisors (see below), whose sum is σ = 38892065760. Its totient is φ = 12819976876.

The previous prime is 25783998791. The next prime is 25783998829. The reversal of 25783998794 is 49789938752.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (25783998791) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36010814 + ... + 36011529.

It is an arithmetic number, because the mean of its divisors is an integer number (4861508220).

Almost surely, 2^25783998794 is an apocalyptic number.

25783998794 is a deficient number, since it is larger than the sum of its proper divisors (13108066966).

25783998794 is a wasteful number, since it uses less digits than its factorization.

25783998794 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72022524.

The product of its digits is 274337280, while the sum is 71.

The spelling of 25783998794 in words is "twenty-five billion, seven hundred eighty-three million, nine hundred ninety-eight thousand, seven hundred ninety-four".