25876638582817 has 4 divisors (see below), whose sum is σ = 28229060272176. Its totient is φ = 23524216893460.

The previous prime is 25876638582713. The next prime is 25876638582853. The reversal of 25876638582817 is 71828583667852.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 25876638582817 - 2⁷ = 25876638582689 is a prime.

It is a super-3 number, since 3×25876638582817³ (a number of 41 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25876638582857) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1176210844663 + ... + 1176210844684.

It is an arithmetic number, because the mean of its divisors is an integer number (7057265068044).

Almost surely, 2^{25876638582817} is an apocalyptic number.

It is an amenable number.

25876638582817 is a deficient number, since it is larger than the sum of its proper divisors (2352421689359).

25876638582817 is a wasteful number, since it uses less digits than its factorization.

25876638582817 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2352421689358.

The product of its digits is 2167603200, while the sum is 76.

The spelling of 25876638582817 in words is "twenty-five trillion, eight hundred seventy-six billion, six hundred thirty-eight million, five hundred eighty-two thousand, eight hundred seventeen".