1000852585 has 4 divisors (see below), whose sum is σ = 1201023108. Its totient is φ = 800682064.

The previous prime is 1000852537. The next prime is 1000852591. The reversal of 1000852585 is 5852580001.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 628053721 + 372798864 = 25061^2 + 19308^2 .

It is a cyclic number.

It is not a de Polignac number, because 1000852585 - 2²⁵ = 967298153 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1000852585.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 100085254 + ... + 100085263.

It is an arithmetic number, because the mean of its divisors is an integer number (300255777).

Almost surely, 2^1000852585 is an apocalyptic number.

It is an amenable number.

1000852585 is a deficient number, since it is larger than the sum of its proper divisors (200170523).

1000852585 is an equidigital number, since it uses as much as digits as its factorization.

1000852585 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200170522.

The product of its (nonzero) digits is 16000, while the sum is 34.

The square root of 1000852585 is about 31636.2542820733. The cubic root of 1000852585 is about 1000.2841142714.

The spelling of 1000852585 in words is "one billion, eight hundred fifty-two thousand, five hundred eighty-five".