258508965 has 64 divisors (see below), whose sum is σ = 511580160. Its totient is φ = 109589760.

The previous prime is 258508951. The next prime is 258508967. The reversal of 258508965 is 569805852.

It is not a de Polignac number, because 258508965 - 2⁴ = 258508949 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (258508967) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 37584 + ... + 43926.

It is an arithmetic number, because the mean of its divisors is an integer number (7993440).

Almost surely, 2^258508965 is an apocalyptic number.

It is an amenable number.

258508965 is a deficient number, since it is larger than the sum of its proper divisors (253071195).

258508965 is a wasteful number, since it uses less digits than its factorization.

258508965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6394.

The product of its (nonzero) digits is 864000, while the sum is 48.

The square root of 258508965 is about 16078.2139866342. The cubic root of 258508965 is about 637.0280212793.

The spelling of 258508965 in words is "two hundred fifty-eight million, five hundred eight thousand, nine hundred sixty-five".