258263985 has 16 divisors (see below), whose sum is σ = 472254336. Its totient is φ = 118063488.

The previous prime is 258263981. The next prime is 258263989. The reversal of 258263985 is 589362852.

It is an interprime number because it is at equal distance from previous prime (258263981) and next prime (258263989).

It is not a de Polignac number, because 258263985 - 2² = 258263981 is a prime.

It is not an unprimeable number, because it can be changed into a prime (258263981) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1229724 + ... + 1229933.

It is an arithmetic number, because the mean of its divisors is an integer number (29515896).

Almost surely, 2^258263985 is an apocalyptic number.

It is an amenable number.

258263985 is a deficient number, since it is larger than the sum of its proper divisors (213990351).

258263985 is a wasteful number, since it uses less digits than its factorization.

258263985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2459672.

The product of its digits is 1036800, while the sum is 48.

The square root of 258263985 is about 16070.5937973679. The cubic root of 258263985 is about 636.8267278762.

The spelling of 258263985 in words is "two hundred fifty-eight million, two hundred sixty-three thousand, nine hundred eighty-five".