2565266 has 32 divisors (see below), whose sum is σ = 4691520. Its totient is φ = 1039680.

The previous prime is 2565263. The next prime is 2565289. The reversal of 2565266 is 6625652.

It is a d-powerful number, because it can be written as 2² + 5⁶ + 6⁵ + 5⁹ + 2¹⁸ + 6⁶ + 6⁷ .

It is not an unprimeable number, because it can be changed into a prime (2565263) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 135005 + ... + 135023.

It is an arithmetic number, because the mean of its divisors is an integer number (146610).

2^2565266 is an apocalyptic number.

2565266 is a deficient number, since it is larger than the sum of its proper divisors (2126254).

2565266 is a wasteful number, since it uses less digits than its factorization.

2565266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87 (or 49 counting only the distinct ones).

The product of its digits is 21600, while the sum is 32.

The square root of 2565266 is about 1601.6447795938. The cubic root of 2565266 is about 136.8918107971.

The spelling of 2565266 in words is "two million, five hundred sixty-five thousand, two hundred sixty-six".