2865265 has 16 divisors (see below), whose sum is σ = 3922128. Its totient is φ = 1990656.

The previous prime is 2865259. The next prime is 2865277. The reversal of 2865265 is 5625682.

It can be written as a sum of positive squares in 8 ways, for example, as 12544 + 2852721 = 112^2 + 1689^2 .

It is a 5-Lehmer number, since φ(2865265) divides (2865265-1)⁵.

It is a cyclic number.

It is not a de Polignac number, because 2865265 - 2¹³ = 2857073 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 2865265.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 192 + ... + 2401.

It is an arithmetic number, because the mean of its divisors is an integer number (245133).

2^2865265 is an apocalyptic number.

It is an amenable number.

2865265 is a deficient number, since it is larger than the sum of its proper divisors (1056863).

2865265 is a wasteful number, since it uses less digits than its factorization.

2865265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2628.

The product of its digits is 28800, while the sum is 34.

The square root of 2865265 is about 1692.7093666664. The cubic root of 2865265 is about 142.0326744885.

The spelling of 2865265 in words is "two million, eight hundred sixty-five thousand, two hundred sixty-five".