2585228865 has 16 divisors (see below), whose sum is σ = 4316208768. Its totient is φ = 1318841216.

The previous prime is 2585228761. The next prime is 2585228873. The reversal of 2585228865 is 5688225852.

It is a cyclic number.

It is not a de Polignac number, because 2585228865 - 2¹¹ = 2585226817 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, 3746364 + ... + 3747053.

It is an arithmetic number, because the mean of its divisors is an integer number (269763048).

Almost surely, 2^2585228865 is an apocalyptic number.

It is an amenable number.

2585228865 is a deficient number, since it is larger than the sum of its proper divisors (1730979903).

2585228865 is a wasteful number, since it uses less digits than its factorization.

2585228865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7493448.

The product of its digits is 3072000, while the sum is 51.

The square root of 2585228865 is about 50845.1459335107. The cubic root of 2585228865 is about 1372.4599037394.

The spelling of 2585228865 in words is "two billion, five hundred eighty-five million, two hundred twenty-eight thousand, eight hundred sixty-five".