254865 has 16 divisors (see below), whose sum is σ = 439488. Its totient is φ = 125376.

The previous prime is 254857. The next prime is 254869. The reversal of 254865 is 568452.

It is not a de Polignac number, because 254865 - 2³ = 254857 is a prime.

It is a Curzon number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 254865.

It is not an unprimeable number, because it can be changed into a prime (254869) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 459 + ... + 848.

It is an arithmetic number, because the mean of its divisors is an integer number (27468).

2²⁵⁴⁸⁶⁵ is an apocalyptic number.

It is an amenable number.

254865 is a deficient number, since it is larger than the sum of its proper divisors (184623).

254865 is a wasteful number, since it uses less digits than its factorization.

254865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1328.

The product of its digits is 9600, while the sum is 30.

The square root of 254865 is about 504.8415593035. The cubic root of 254865 is about 63.4020645037.

The spelling of 254865 in words is "two hundred fifty-four thousand, eight hundred sixty-five".