25289794623 has 4 divisors (see below), whose sum is σ = 33719726168. Its totient is φ = 16859863080.

The previous prime is 25289794613. The next prime is 25289794627. The reversal of 25289794623 is 32649798252.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 25289794623 - 2⁶ = 25289794559 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25289794627) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4214965768 + ... + 4214965773.

It is an arithmetic number, because the mean of its divisors is an integer number (8429931542).

Almost surely, 2^25289794623 is an apocalyptic number.

25289794623 is a deficient number, since it is larger than the sum of its proper divisors (8429931545).

25289794623 is an equidigital number, since it uses as much as digits as its factorization.

25289794623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8429931544.

The product of its digits is 13063680, while the sum is 57.

The spelling of 25289794623 in words is "twenty-five billion, two hundred eighty-nine million, seven hundred ninety-four thousand, six hundred twenty-three".