258263565 has 80 divisors (see below), whose sum is σ = 493693056. Its totient is φ = 115248000.

The previous prime is 258263563. The next prime is 258263597. The reversal of 258263565 is 565362852.

258263565 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 258263565 - 2¹ = 258263563 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (258263563) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 2557015 + ... + 2557115.

Almost surely, 2^258263565 is an apocalyptic number.

It is an amenable number.

258263565 is a deficient number, since it is larger than the sum of its proper divisors (235429491).

258263565 is an equidigital number, since it uses as much as digits as its factorization.

258263565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 208 (or 187 counting only the distinct ones).

The product of its digits is 432000, while the sum is 42.

The square root of 258263565 is about 16070.5807300172. The cubic root of 258263565 is about 636.8263826644.

The spelling of 258263565 in words is "two hundred fifty-eight million, two hundred sixty-three thousand, five hundred sixty-five".