258565258 has 48 divisors (see below), whose sum is σ = 463177440. Its totient is φ = 107905056.

The previous prime is 258565253. The next prime is 258565271. The reversal of 258565258 is 852565852.

258565258 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an alternating number because its digits alternate between even and odd.

It is not an unprimeable number, because it can be changed into a prime (258565253) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1138941 + ... + 1139167.

It is an arithmetic number, because the mean of its divisors is an integer number (9649530).

Almost surely, 2^258565258 is an apocalyptic number.

258565258 is a deficient number, since it is larger than the sum of its proper divisors (204612182).

258565258 is a wasteful number, since it uses less digits than its factorization.

258565258 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 499 (or 492 counting only the distinct ones).

The product of its digits is 960000, while the sum is 46.

The square root of 258565258 is about 16079.9644900105. The cubic root of 258565258 is about 637.0742577361.

It can be divided in two parts, 258 and 565258, that added together give a triangular number (565516 = T₁₀₆₃).

The spelling of 258565258 in words is "two hundred fifty-eight million, five hundred sixty-five thousand, two hundred fifty-eight".