25319126838 has 8 divisors (see below), whose sum is σ = 50638253688. Its totient is φ = 8439708944.

The previous prime is 25319126821. The next prime is 25319126867. The reversal of 25319126838 is 83862191352.

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

25319126838 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2109927231 + ... + 2109927242.

It is an arithmetic number, because the mean of its divisors is an integer number (6329781711).

Almost surely, 2^25319126838 is an apocalyptic number.

25319126838 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.

25319126838 is a wasteful number, since it uses less digits than its factorization.

25319126838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4219854478.

The product of its digits is 622080, while the sum is 48.

The spelling of 25319126838 in words is "twenty-five billion, three hundred nineteen million, one hundred twenty-six thousand, eight hundred thirty-eight".