26252261665 has 16 divisors (see below), whose sum is σ = 36881228160. Its totient is φ = 17562487680.

The previous prime is 26252261603. The next prime is 26252261689. The reversal of 26252261665 is 56616225262.

It is not a de Polignac number, because 26252261665 - 2⁹ = 26252261153 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9145695 + ... + 9148564.

It is an arithmetic number, because the mean of its divisors is an integer number (2305076760).

Almost surely, 2^26252261665 is an apocalyptic number.

It is an amenable number.

26252261665 is a deficient number, since it is larger than the sum of its proper divisors (10628966495).

26252261665 is a wasteful number, since it uses less digits than its factorization.

26252261665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18294312.

The product of its digits is 518400, while the sum is 43.

The spelling of 26252261665 in words is "twenty-six billion, two hundred fifty-two million, two hundred sixty-one thousand, six hundred sixty-five".