2585243156 has 12 divisors (see below), whose sum is σ = 4557199668. Its totient is φ = 1283186112.

The previous prime is 2585243153. The next prime is 2585243201. The reversal of 2585243156 is 6513425852.

It can be written as a sum of positive squares in 2 ways, for example, as 2231050756 + 354192400 = 47234^2 + 18820^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2585243153) 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, 2358251 + ... + 2359346.

It is an arithmetic number, because the mean of its divisors is an integer number (379766639).

Almost surely, 2^2585243156 is an apocalyptic number.

It is an amenable number.

2585243156 is a deficient number, since it is larger than the sum of its proper divisors (1971956512).

2585243156 is a wasteful number, since it uses less digits than its factorization.

2585243156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4717738 (or 4717736 counting only the distinct ones).

The product of its digits is 288000, while the sum is 41.

The square root of 2585243156 is about 50845.2864678723. The cubic root of 2585243156 is about 1372.4624326951.

The spelling of 2585243156 in words is "two billion, five hundred eighty-five million, two hundred forty-three thousand, one hundred fifty-six".