259234561 has 4 divisors (see below), whose sum is σ = 262885824. Its totient is φ = 255583300.

The previous prime is 259234531. The next prime is 259234589. The reversal of 259234561 is 165432952.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 259234561 - 2⁵ = 259234529 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 259234561.

It is not an unprimeable number, because it can be changed into a prime (259234511) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1825525 + ... + 1825666.

It is an arithmetic number, because the mean of its divisors is an integer number (65721456).

Almost surely, 2^259234561 is an apocalyptic number.

It is an amenable number.

259234561 is a deficient number, since it is larger than the sum of its proper divisors (3651263).

259234561 is an equidigital number, since it uses as much as digits as its factorization.

259234561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3651262.

The product of its digits is 64800, while the sum is 37.

The square root of 259234561 is about 16100.7627459074. The cubic root of 259234561 is about 637.6234786319.

The spelling of 259234561 in words is "two hundred fifty-nine million, two hundred thirty-four thousand, five hundred sixty-one".