2585287509 has 8 divisors (see below), whose sum is σ = 3939485760. Its totient is φ = 1477307136.

The previous prime is 2585287487. The next prime is 2585287519. The reversal of 2585287509 is 9057825852.

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

It is not a de Polignac number, because 2585287509 - 2¹⁹ = 2584763221 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2585287519) 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, 61554444 + ... + 61554485.

It is an arithmetic number, because the mean of its divisors is an integer number (492435720).

Almost surely, 2^2585287509 is an apocalyptic number.

It is an amenable number.

2585287509 is a deficient number, since it is larger than the sum of its proper divisors (1354198251).

2585287509 is a wasteful number, since it uses less digits than its factorization.

2585287509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123108939.

The product of its (nonzero) digits is 2016000, while the sum is 51.

The square root of 2585287509 is about 50845.7226224586. The cubic root of 2585287509 is about 1372.4702814060.

The spelling of 2585287509 in words is "two billion, five hundred eighty-five million, two hundred eighty-seven thousand, five hundred nine".