265105823 has 4 divisors (see below), whose sum is σ = 267041040. Its totient is φ = 263170608.

The previous prime is 265105811. The next prime is 265105847. The reversal of 265105823 is 328501562.

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

It is a cyclic number.

It is not a de Polignac number, because 265105823 - 2⁴ = 265105807 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 265105823.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (265105853) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 967403 + ... + 967676.

It is an arithmetic number, because the mean of its divisors is an integer number (66760260).

Almost surely, 2^265105823 is an apocalyptic number.

265105823 is a deficient number, since it is larger than the sum of its proper divisors (1935217).

265105823 is a wasteful number, since it uses less digits than its factorization.

265105823 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1935216.

The product of its (nonzero) digits is 14400, while the sum is 32.

The square root of 265105823 is about 16282.0705992819. The cubic root of 265105823 is about 642.4013165823.

The spelling of 265105823 in words is "two hundred sixty-five million, one hundred five thousand, eight hundred twenty-three".