259582985 has 4 divisors (see below), whose sum is σ = 311499588. Its totient is φ = 207666384.

The previous prime is 259582951. The next prime is 259582987. The reversal of 259582985 is 589285952.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 193989184 + 65593801 = 13928^2 + 8099^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-259582985 is a prime.

It is a super-2 number, since 2×259582985² = 134766652203020450, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (259582987) 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, 25958294 + ... + 25958303.

It is an arithmetic number, because the mean of its divisors is an integer number (77874897).

Almost surely, 2^259582985 is an apocalyptic number.

It is an amenable number.

259582985 is a deficient number, since it is larger than the sum of its proper divisors (51916603).

259582985 is an equidigital number, since it uses as much as digits as its factorization.

259582985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51916602.

The product of its digits is 2592000, while the sum is 53.

The square root of 259582985 is about 16111.5792211689. The cubic root of 259582985 is about 637.9090165164.

The spelling of 259582985 in words is "two hundred fifty-nine million, five hundred eighty-two thousand, nine hundred eighty-five".