258485 has 8 divisors (see below), whose sum is σ = 328536. Its totient is φ = 194560.

The previous prime is 258469. The next prime is 258487. The reversal of 258485 is 584852.

It can be written as a sum of positive squares in 4 ways, for example, as 130321 + 128164 = 361^2 + 358^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 258485 - 2⁴ = 258469 is a prime.

It is a Duffinian 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 258485.

It is not an unprimeable number, because it can be changed into a prime (258487) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1436 + ... + 1605.

It is an arithmetic number, because the mean of its divisors is an integer number (41067).

2²⁵⁸⁴⁸⁵ is an apocalyptic number.

It is an amenable number.

258485 is a deficient number, since it is larger than the sum of its proper divisors (70051).

258485 is a wasteful number, since it uses less digits than its factorization.

258485 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3063.

The product of its digits is 12800, while the sum is 32.

The square root of 258485 is about 508.4142012179. The cubic root of 258485 is about 63.7008335504.

The spelling of 258485 in words is "two hundred fifty-eight thousand, four hundred eighty-five".