254999 has 4 divisors (see below), whose sum is σ = 268440. Its totient is φ = 241560.

The previous prime is 254993. The next prime is 255007. The reversal of 254999 is 999452.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 254999 - 2¹⁶ = 189463 is a prime.

It is a Duffinian number.

254999 is a modest number, since divided by 999 gives 254 as remainder.

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 254999.

It is not an unprimeable number, because it can be changed into a prime (254993) 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, 6692 + ... + 6729.

It is an arithmetic number, because the mean of its divisors is an integer number (67110).

2²⁵⁴⁹⁹⁹ is an apocalyptic number.

254999 is a deficient number, since it is larger than the sum of its proper divisors (13441).

254999 is a wasteful number, since it uses less digits than its factorization.

254999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13440.

The product of its digits is 29160, while the sum is 38.

The square root of 254999 is about 504.9742567696. The cubic root of 254999 is about 63.4131741606.

The spelling of 254999 in words is "two hundred fifty-four thousand, nine hundred ninety-nine".