258495 has 16 divisors (see below), whose sum is σ = 435840. Its totient is φ = 130464.

The previous prime is 258491. The next prime is 258499. The reversal of 258495 is 594852.

It is an interprime number because it is at equal distance from previous prime (258491) and next prime (258499).

It is not a de Polignac number, because 258495 - 2² = 258491 is a prime.

258495 is a lucky 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 258495.

It is not an unprimeable number, because it can be changed into a prime (258491) 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, 169 + ... + 738.

It is an arithmetic number, because the mean of its divisors is an integer number (27240).

2²⁵⁸⁴⁹⁵ is an apocalyptic number.

258495 is a deficient number, since it is larger than the sum of its proper divisors (177345).

258495 is a wasteful number, since it uses less digits than its factorization.

258495 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 934.

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

The square root of 258495 is about 508.4240356238. The cubic root of 258495 is about 63.7016550038.

The spelling of 258495 in words is "two hundred fifty-eight thousand, four hundred ninety-five".