258385 has 8 divisors (see below), whose sum is σ = 320256. Its totient is φ = 199920.

The previous prime is 258373. The next prime is 258389. The reversal of 258385 is 583852.

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

It is not a de Polignac number, because 258385 - 2⁵ = 258353 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a d-powerful number, because it can be written as 2¹⁶ + 5 + 3¹¹ + 8 + 8² + 5⁶ .

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

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (258389) 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, 679 + ... + 988.

It is an arithmetic number, because the mean of its divisors is an integer number (40032).

2²⁵⁸³⁸⁵ is an apocalyptic number.

It is an amenable number.

258385 is a deficient number, since it is larger than the sum of its proper divisors (61871).

258385 is a wasteful number, since it uses less digits than its factorization.

258385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1703.

The product of its digits is 9600, while the sum is 31.

The square root of 258385 is about 508.3158466938. The cubic root of 258385 is about 63.6926178512.

The spelling of 258385 in words is "two hundred fifty-eight thousand, three hundred eighty-five".