25861365326 has 4 divisors (see below), whose sum is σ = 38792047992. Its totient is φ = 12930682662.

The previous prime is 25861365319. The next prime is 25861365407. The reversal of 25861365326 is 62356316852.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6465341330 + ... + 6465341333.

It is an arithmetic number, because the mean of its divisors is an integer number (9698011998).

Almost surely, 2^25861365326 is an apocalyptic number.

25861365326 is a deficient number, since it is larger than the sum of its proper divisors (12930682666).

25861365326 is a wasteful number, since it uses less digits than its factorization.

25861365326 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12930682665.

The product of its digits is 1555200, while the sum is 47.

The spelling of 25861365326 in words is "twenty-five billion, eight hundred sixty-one million, three hundred sixty-five thousand, three hundred twenty-six".