258638255 has 8 divisors (see below), whose sum is σ = 328622832. Its totient is φ = 194739328.

The previous prime is 258638213. The next prime is 258638297. The reversal of 258638255 is 552836852.

It is an interprime number because it is at equal distance from previous prime (258638213) and next prime (258638297).

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

It is a cyclic number.

It is not a de Polignac number, because 258638255 - 2²⁰ = 257589679 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1521317 + ... + 1521486.

It is an arithmetic number, because the mean of its divisors is an integer number (41077854).

Almost surely, 2^258638255 is an apocalyptic number.

258638255 is a deficient number, since it is larger than the sum of its proper divisors (69984577).

258638255 is a wasteful number, since it uses less digits than its factorization.

258638255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3042825.

The product of its digits is 576000, while the sum is 44.

The square root of 258638255 is about 16082.2341420587. The cubic root of 258638255 is about 637.1342040907.

The spelling of 258638255 in words is "two hundred fifty-eight million, six hundred thirty-eight thousand, two hundred fifty-five".