2805265 has 4 divisors (see below), whose sum is σ = 3366324. Its totient is φ = 2244208.

The previous prime is 2805263. The next prime is 2805311. The reversal of 2805265 is 5625082.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5625082 = 2 ⋅2812541.

It can be written as a sum of positive squares in 2 ways, for example, as 321489 + 2483776 = 567^2 + 1576^2 .

It is a cyclic number.

It is not a de Polignac number, because 2805265 - 2¹ = 2805263 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2805263) 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, 280522 + ... + 280531.

It is an arithmetic number, because the mean of its divisors is an integer number (841581).

2^2805265 is an apocalyptic number.

It is an amenable number.

2805265 is a deficient number, since it is larger than the sum of its proper divisors (561059).

2805265 is an equidigital number, since it uses as much as digits as its factorization.

2805265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 561058.

The product of its (nonzero) digits is 4800, while the sum is 28.

The square root of 2805265 is about 1674.8925338660. The cubic root of 2805265 is about 141.0342622504.

The spelling of 2805265 in words is "two million, eight hundred five thousand, two hundred sixty-five".