2585198144 has 14 divisors (see below), whose sum is σ = 5130002694. Its totient is φ = 1292599040.

The previous prime is 2585198089. The next prime is 2585198173. The reversal of 2585198144 is 4418915852.

It can be written as a sum of positive squares in only one way, i.e., 1561198144 + 1024000000 = 39512^2 + 32000^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20196797 + ... + 20196924.

Almost surely, 2^2585198144 is an apocalyptic number.

It is an amenable number.

2585198144 is a deficient number, since it is larger than the sum of its proper divisors (2544804550).

2585198144 is an equidigital number, since it uses as much as digits as its factorization.

2585198144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40393733 (or 40393723 counting only the distinct ones).

The product of its digits is 460800, while the sum is 47.

The square root of 2585198144 is about 50844.8438290452. The cubic root of 2585198144 is about 1372.4544672758.

The spelling of 2585198144 in words is "two billion, five hundred eighty-five million, one hundred ninety-eight thousand, one hundred forty-four".