25565379826863 has 8 divisors (see below), whose sum is σ = 35881234844800. Its totient is φ = 16146555680088.

The previous prime is 25565379826853. The next prime is 25565379826897. The reversal of 25565379826863 is 36862897356552.

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

It is not a de Polignac number, because 25565379826863 - 2⁸ = 25565379826607 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 (25565379826853) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 224257717723 + ... + 224257717836.

It is an arithmetic number, because the mean of its divisors is an integer number (4485154355600).

Almost surely, 2^{25565379826863} is an apocalyptic number.

25565379826863 is a deficient number, since it is larger than the sum of its proper divisors (10315855017937).

25565379826863 is a wasteful number, since it uses less digits than its factorization.

25565379826863 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 448515435581.

The product of its digits is 3919104000, while the sum is 75.

The spelling of 25565379826863 in words is "twenty-five trillion, five hundred sixty-five billion, three hundred seventy-nine million, eight hundred twenty-six thousand, eight hundred sixty-three".