265285 has 8 divisors (see below), whose sum is σ = 337176. Its totient is φ = 199680.

The previous prime is 265277. The next prime is 265313. The reversal of 265285 is 582562.

It can be written as a sum of positive squares in 4 ways, for example, as 2116 + 263169 = 46^2 + 513^2 .

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

It is not a de Polignac number, because 265285 - 2³ = 265277 is a prime.

It is a super-2 number, since 2×265285² = 140752262450, which contains 22 as substring.

It is a Duffinian number.

265285 is a lucky number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1476 + ... + 1645.

It is an arithmetic number, because the mean of its divisors is an integer number (42147).

2²⁶⁵²⁸⁵ is an apocalyptic number.

It is an amenable number.

265285 is a deficient number, since it is larger than the sum of its proper divisors (71891).

265285 is a wasteful number, since it uses less digits than its factorization.

265285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3143.

The product of its digits is 4800, while the sum is 28.

The square root of 265285 is about 515.0582491330. The cubic root of 265285 is about 64.2546010523.

The spelling of 265285 in words is "two hundred sixty-five thousand, two hundred eighty-five".