2565201 has 4 divisors (see below), whose sum is σ = 3420272. Its totient is φ = 1710132.

The previous prime is 2565191. The next prime is 2565203. The reversal of 2565201 is 1025652.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 2565201 - 2¹¹ = 2563153 is a prime.

It is a D-number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2565203) 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, 427531 + ... + 427536.

It is an arithmetic number, because the mean of its divisors is an integer number (855068).

2^2565201 is an apocalyptic number.

It is an amenable number.

2565201 is a deficient number, since it is larger than the sum of its proper divisors (855071).

2565201 is an equidigital number, since it uses as much as digits as its factorization.

2565201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 855070.

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 2565201 is about 1601.6244878248. The cubic root of 2565201 is about 136.8906545761.

The spelling of 2565201 in words is "two million, five hundred sixty-five thousand, two hundred one".