2585887642 has 32 divisors (see below), whose sum is σ = 4274726400. Its totient is φ = 1165726848.

The previous prime is 2585887639. The next prime is 2585887651. The reversal of 2585887642 is 2467885852.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 693459 + ... + 697177.

It is an arithmetic number, because the mean of its divisors is an integer number (133585200).

Almost surely, 2^2585887642 is an apocalyptic number.

2585887642 is a deficient number, since it is larger than the sum of its proper divisors (1688838758).

2585887642 is a wasteful number, since it uses less digits than its factorization.

2585887642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4350.

The product of its digits is 8601600, while the sum is 55.

The square root of 2585887642 is about 50851.6237892164. The cubic root of 2585887642 is about 1372.5764721719.

The spelling of 2585887642 in words is "two billion, five hundred eighty-five million, eight hundred eighty-seven thousand, six hundred forty-two".