258296085 has 12 divisors (see below), whose sum is σ = 447713292. Its totient is φ = 137757888.

The previous prime is 258296063. The next prime is 258296099. The reversal of 258296085 is 580692852.

258296085 is a `hidden beast` number, since 2 + 582 + 9 + 60 + 8 + 5 = 666.

258296085 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 95121009 + 163175076 = 9753^2 + 12774^2 .

It is not a de Polignac number, because 258296085 - 2¹² = 258291989 is a prime.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 5739913 = 258296085 / (2 + 5 + 8 + 2 + 9 + 6 + 0 + 8 + 5).

It is a self number, because there is not a number n which added to its sum of digits gives 258296085.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2869912 + ... + 2870001.

It is an arithmetic number, because the mean of its divisors is an integer number (37309441).

Almost surely, 2^258296085 is an apocalyptic number.

It is an amenable number.

258296085 is a deficient number, since it is larger than the sum of its proper divisors (189417207).

258296085 is a wasteful number, since it uses less digits than its factorization.

258296085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5739924 (or 5739921 counting only the distinct ones).

The product of its (nonzero) digits is 345600, while the sum is 45.

The square root of 258296085 is about 16071.5924848784. The cubic root of 258296085 is about 636.8531108181.

The spelling of 258296085 in words is "two hundred fifty-eight million, two hundred ninety-six thousand, eighty-five".