2585172387 has 8 divisors (see below), whose sum is σ = 3939310336. Its totient is φ = 1477241352.

The previous prime is 2585172347. The next prime is 2585172413. The reversal of 2585172387 is 7832715852.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2585172387 - 2¹⁰ = 2585171363 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2585172307) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 61551703 + ... + 61551744.

It is an arithmetic number, because the mean of its divisors is an integer number (492413792).

Almost surely, 2^2585172387 is an apocalyptic number.

2585172387 is a deficient number, since it is larger than the sum of its proper divisors (1354137949).

2585172387 is a wasteful number, since it uses less digits than its factorization.

2585172387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123103457.

The product of its digits is 940800, while the sum is 48.

The square root of 2585172387 is about 50844.5905382274. The cubic root of 2585172387 is about 1372.4499092206.

The spelling of 2585172387 in words is "two billion, five hundred eighty-five million, one hundred seventy-two thousand, three hundred eighty-seven".