258265128 has 32 divisors (see below), whose sum is σ = 704360160. Its totient is φ = 78262080.

The previous prime is 258265121. The next prime is 258265169. The reversal of 258265128 is 821562852.

It is not an unprimeable number, because it can be changed into a prime (258265121) 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, 488875 + ... + 489402.

It is an arithmetic number, because the mean of its divisors is an integer number (22011255).

Almost surely, 2^258265128 is an apocalyptic number.

It is an amenable number.

258265128 is an abundant number, since it is smaller than the sum of its proper divisors (446095032).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

258265128 is a wasteful number, since it uses less digits than its factorization.

258265128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 978297 (or 978293 counting only the distinct ones).

The product of its digits is 76800, while the sum is 39.

The square root of 258265128 is about 16070.6293591757. The cubic root of 258265128 is about 636.8276673437.

The spelling of 258265128 in words is "two hundred fifty-eight million, two hundred sixty-five thousand, one hundred twenty-eight".