25979441842 has 8 divisors (see below), whose sum is σ = 38969891100. Its totient is φ = 12989478144.

The previous prime is 25979441773. The next prime is 25979441861. The reversal of 25979441842 is 24814497952.

It can be written as a sum of positive squares in 2 ways, for example, as 25233004801 + 746437041 = 158849^2 + 27321^2 .

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

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, 77634 + ... + 240802.

Almost surely, 2^25979441842 is an apocalyptic number.

25979441842 is a deficient number, since it is larger than the sum of its proper divisors (12990449258).

25979441842 is a wasteful number, since it uses less digits than its factorization.

25979441842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 242780.

The product of its digits is 5806080, while the sum is 55.

The spelling of 25979441842 in words is "twenty-five billion, nine hundred seventy-nine million, four hundred forty-one thousand, eight hundred forty-two".