25828936634 has 8 divisors (see below), whose sum is σ = 38747469108. Its totient is φ = 12913113600.

The previous prime is 25828936613. The next prime is 25828936649. The reversal of 25828936634 is 43663982852.

It can be written as a sum of positive squares in 2 ways, for example, as 25614402025 + 214534609 = 160045^2 + 14647^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 25828936634.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 653357 + ... + 691760.

Almost surely, 2^25828936634 is an apocalyptic number.

25828936634 is a deficient number, since it is larger than the sum of its proper divisors (12918532474).

25828936634 is a wasteful number, since it uses less digits than its factorization.

25828936634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1354720.

The product of its digits is 14929920, while the sum is 56.

The spelling of 25828936634 in words is "twenty-five billion, eight hundred twenty-eight million, nine hundred thirty-six thousand, six hundred thirty-four".