2585244685 has 4 divisors (see below), whose sum is σ = 3102293628. Its totient is φ = 2068195744.

The previous prime is 2585244637. The next prime is 2585244691. The reversal of 2585244685 is 5864425852.

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 332223529 + 2253021156 = 18227^2 + 47466^2 .

It is a cyclic number.

It is not a de Polignac number, because 2585244685 - 2⁹ = 2585244173 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 258524464 + ... + 258524473.

It is an arithmetic number, because the mean of its divisors is an integer number (775573407).

Almost surely, 2^2585244685 is an apocalyptic number.

It is an amenable number.

2585244685 is a deficient number, since it is larger than the sum of its proper divisors (517048943).

2585244685 is an equidigital number, since it uses as much as digits as its factorization.

2585244685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 517048942.

The product of its digits is 3072000, while the sum is 49.

The square root of 2585244685 is about 50845.3015036788. The cubic root of 2585244685 is about 1372.4627032686.

The spelling of 2585244685 in words is "two billion, five hundred eighty-five million, two hundred forty-four thousand, six hundred eighty-five".