265885 has 8 divisors (see below), whose sum is σ = 327096. Its totient is φ = 207360.

The previous prime is 265883. The next prime is 265891. The reversal of 265885 is 588562.

It can be written as a sum of positive squares in 4 ways, for example, as 41209 + 224676 = 203^2 + 474^2 .

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

It is not a de Polignac number, because 265885 - 2¹ = 265883 is a prime.

It is a Duffinian number.

265885 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 265885.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (265883) 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, 444 + ... + 853.

It is an arithmetic number, because the mean of its divisors is an integer number (40887).

2²⁶⁵⁸⁸⁵ is an apocalyptic number.

It is an amenable number.

265885 is a deficient number, since it is larger than the sum of its proper divisors (61211).

265885 is a wasteful number, since it uses less digits than its factorization.

265885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1343.

The product of its digits is 19200, while the sum is 34.

The square root of 265885 is about 515.6403785585. The cubic root of 265885 is about 64.3030065180.

The spelling of 265885 in words is "two hundred sixty-five thousand, eight hundred eighty-five".