855265 has 4 divisors (see below), whose sum is σ = 1026324. Its totient is φ = 684208.

The previous prime is 855241. The next prime is 855269. The reversal of 855265 is 562558.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 562558 = 2 ⋅281279.

It can be written as a sum of positive squares in 2 ways, for example, as 646416 + 208849 = 804^2 + 457^2 .

It is a cyclic number.

It is not a de Polignac number, because 855265 - 2¹¹ = 853217 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (855269) 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, 85522 + ... + 85531.

It is an arithmetic number, because the mean of its divisors is an integer number (256581).

2⁸⁵⁵²⁶⁵ is an apocalyptic number.

It is an amenable number.

855265 is a deficient number, since it is larger than the sum of its proper divisors (171059).

855265 is a wasteful number, since it uses less digits than its factorization.

855265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171058.

The product of its digits is 12000, while the sum is 31.

The square root of 855265 is about 924.8053849324. The cubic root of 855265 is about 94.9220043112.

The spelling of 855265 in words is "eight hundred fifty-five thousand, two hundred sixty-five".