258265890 has 24 divisors (see below), whose sum is σ = 671491548. Its totient is φ = 68870880.

The previous prime is 258265877. The next prime is 258265901. The reversal of 258265890 is 98562852.

258265890 is a `hidden beast` number, since 2 + 582 + 65 + 8 + 9 + 0 = 666.

258265890 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 243079281 + 15186609 = 15591^2 + 3897^2 .

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1434721 + ... + 1434900.

Almost surely, 2^258265890 is an apocalyptic number.

258265890 is an abundant number, since it is smaller than the sum of its proper divisors (413225658).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

258265890 is a wasteful number, since it uses less digits than its factorization.

258265890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2869634 (or 2869631 counting only the distinct ones).

The product of its (nonzero) digits is 345600, while the sum is 45.

The square root of 258265890 is about 16070.6530670038. The cubic root of 258265890 is about 636.8282936539.

The spelling of 258265890 in words is "two hundred fifty-eight million, two hundred sixty-five thousand, eight hundred ninety".