258435085 has 16 divisors (see below), whose sum is σ = 314910720. Its totient is φ = 203575680.

The previous prime is 258435077. The next prime is 258435103. The reversal of 258435085 is 580534852.

It is not a de Polignac number, because 258435085 - 2³ = 258435077 is a prime.

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, 119524 + ... + 121666.

It is an arithmetic number, because the mean of its divisors is an integer number (19681920).

Almost surely, 2^258435085 is an apocalyptic number.

It is an amenable number.

258435085 is a deficient number, since it is larger than the sum of its proper divisors (56475635).

258435085 is a wasteful number, since it uses less digits than its factorization.

258435085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2508.

The product of its (nonzero) digits is 192000, while the sum is 40.

The square root of 258435085 is about 16075.9163035890. The cubic root of 258435085 is about 636.9673294907.

The spelling of 258435085 in words is "two hundred fifty-eight million, four hundred thirty-five thousand, eighty-five".