25613853198 has 8 divisors (see below), whose sum is σ = 51227706408. Its totient is φ = 8537951064.

The previous prime is 25613853191. The next prime is 25613853229. The reversal of 25613853198 is 89135831652.

It is a happy number.

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

25613853198 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 25613853198.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25613853191) 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, 2134487761 + ... + 2134487772.

It is an arithmetic number, because the mean of its divisors is an integer number (6403463301).

Almost surely, 2^25613853198 is an apocalyptic number.

25613853198 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

25613853198 is a wasteful number, since it uses less digits than its factorization.

25613853198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4268975538.

The product of its digits is 1555200, while the sum is 51.

The spelling of 25613853198 in words is "twenty-five billion, six hundred thirteen million, eight hundred fifty-three thousand, one hundred ninety-eight".