258408245 has 16 divisors (see below), whose sum is σ = 329177520. Its totient is φ = 194064384.

The previous prime is 258408239. The next prime is 258408251. The reversal of 258408245 is 542804852.

It is an interprime number because it is at equal distance from previous prime (258408239) and next prime (258408251).

It can be written as a sum of positive squares in 8 ways, for example, as 677329 + 257730916 = 823^2 + 16054^2 .

It is not a de Polignac number, because 258408245 - 2¹⁰ = 258407221 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 258408199 and 258408208.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31049 + ... + 38481.

It is an arithmetic number, because the mean of its divisors is an integer number (20573595).

Almost surely, 2^258408245 is an apocalyptic number.

It is an amenable number.

258408245 is a deficient number, since it is larger than the sum of its proper divisors (70769275).

258408245 is a wasteful number, since it uses less digits than its factorization.

258408245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7864.

The product of its (nonzero) digits is 102400, while the sum is 38.

The square root of 258408245 is about 16075.0814927950. The cubic root of 258408245 is about 636.9452777957.

The spelling of 258408245 in words is "two hundred fifty-eight million, four hundred eight thousand, two hundred forty-five".