258270605 has 4 divisors (see below), whose sum is σ = 309924732. Its totient is φ = 206616480.

The previous prime is 258270601. The next prime is 258270673. The reversal of 258270605 is 506072852.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 138980521 + 119290084 = 11789^2 + 10922^2 .

It is not a de Polignac number, because 258270605 - 2² = 258270601 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (258270601) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25827056 + ... + 25827065.

It is an arithmetic number, because the mean of its divisors is an integer number (77481183).

Almost surely, 2^258270605 is an apocalyptic number.

It is an amenable number.

258270605 is a deficient number, since it is larger than the sum of its proper divisors (51654127).

258270605 is an equidigital number, since it uses as much as digits as its factorization.

258270605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51654126.

The product of its (nonzero) digits is 33600, while the sum is 35.

The square root of 258270605 is about 16070.7997623018. The cubic root of 258270605 is about 636.8321690232.

The spelling of 258270605 in words is "two hundred fifty-eight million, two hundred seventy thousand, six hundred five".