258249 has 4 divisors (see below), whose sum is σ = 344336. Its totient is φ = 172164.

The previous prime is 258241. The next prime is 258253. The reversal of 258249 is 942852.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 258249 - 2³ = 258241 is a prime.

It is a D-number.

It is a Duffinian number.

It is a Curzon number.

258249 is a lucky number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 258249.

It is not an unprimeable number, because it can be changed into a prime (258241) 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, 43039 + ... + 43044.

It is an arithmetic number, because the mean of its divisors is an integer number (86084).

2²⁵⁸²⁴⁹ is an apocalyptic number.

It is an amenable number.

258249 is a deficient number, since it is larger than the sum of its proper divisors (86087).

258249 is an equidigital number, since it uses as much as digits as its factorization.

258249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86086.

The product of its digits is 5760, while the sum is 30.

The square root of 258249 is about 508.1820539925. The cubic root of 258249 is about 63.6814410979.

The spelling of 258249 in words is "two hundred fifty-eight thousand, two hundred forty-nine".