254985 has 16 divisors (see below), whose sum is σ = 414720. Its totient is φ = 133760.

The previous prime is 254977. The next prime is 254987. The reversal of 254985 is 589452.

It is not a de Polignac number, because 254985 - 2³ = 254977 is a prime.

It is an alternating number because its digits alternate between even and odd.

Its product of digits (14400) is a multiple of the sum of its prime divisors (288).

It is not an unprimeable number, because it can be changed into a prime (254987) 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, 1240 + ... + 1430.

It is an arithmetic number, because the mean of its divisors is an integer number (25920).

2²⁵⁴⁹⁸⁵ is an apocalyptic number.

It is an amenable number.

254985 is a deficient number, since it is larger than the sum of its proper divisors (159735).

254985 is a wasteful number, since it uses less digits than its factorization.

254985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 288.

The product of its digits is 14400, while the sum is 33.

The square root of 254985 is about 504.9603944865. The cubic root of 254985 is about 63.4120136323.

The spelling of 254985 in words is "two hundred fifty-four thousand, nine hundred eighty-five".