2005285 has 4 divisors (see below), whose sum is σ = 2406348. Its totient is φ = 1604224.

The previous prime is 2005277. The next prime is 2005319. The reversal of 2005285 is 5825002.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5825002 = 2 ⋅2912501.

It can be written as a sum of positive squares in 2 ways, for example, as 247009 + 1758276 = 497^2 + 1326^2 .

It is a cyclic number.

It is not a de Polignac number, because 2005285 - 2³ = 2005277 is a prime.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 200524 + ... + 200533.

It is an arithmetic number, because the mean of its divisors is an integer number (601587).

2^2005285 is an apocalyptic number.

It is an amenable number.

2005285 is a deficient number, since it is larger than the sum of its proper divisors (401063).

2005285 is an equidigital number, since it uses as much as digits as its factorization.

2005285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 401062.

The product of its (nonzero) digits is 800, while the sum is 22.

The square root of 2005285 is about 1416.0808592732. The cubic root of 2005285 is about 126.1029854254.

The spelling of 2005285 in words is "two million, five thousand, two hundred eighty-five".