259825865 has 16 divisors (see below), whose sum is σ = 340032000. Its totient is φ = 189438912.

The previous prime is 259825831. The next prime is 259825873. The reversal of 259825865 is 568528952.

It is not a de Polignac number, because 259825865 - 2⁶ = 259825801 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20165 + ... + 30434.

It is an arithmetic number, because the mean of its divisors is an integer number (21252000).

Almost surely, 2^259825865 is an apocalyptic number.

It is an amenable number.

259825865 is a deficient number, since it is larger than the sum of its proper divisors (80206135).

259825865 is a wasteful number, since it uses less digits than its factorization.

259825865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50696.

The product of its digits is 1728000, while the sum is 50.

The square root of 259825865 is about 16119.1148950555. The cubic root of 259825865 is about 638.1079086549.

The spelling of 259825865 in words is "two hundred fifty-nine million, eight hundred twenty-five thousand, eight hundred sixty-five".