2565473 has 4 divisors (see below), whose sum is σ = 2569620. Its totient is φ = 2561328.

The previous prime is 2565463. The next prime is 2565559. The reversal of 2565473 is 3745652.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2140369 + 425104 = 1463^2 + 652^2 .

It is a cyclic number.

It is not a de Polignac number, because 2565473 - 2¹⁴ = 2549089 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2565403) 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, 938 + ... + 2451.

It is an arithmetic number, because the mean of its divisors is an integer number (642405).

2^2565473 is an apocalyptic number.

It is an amenable number.

2565473 is a deficient number, since it is larger than the sum of its proper divisors (4147).

2565473 is an equidigital number, since it uses as much as digits as its factorization.

2565473 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4146.

The product of its digits is 25200, while the sum is 32.

The square root of 2565473 is about 1601.7093993606. The cubic root of 2565473 is about 136.8954927860.

The spelling of 2565473 in words is "two million, five hundred sixty-five thousand, four hundred seventy-three".