2265566443 has 4 divisors (see below), whose sum is σ = 2589218800. Its totient is φ = 1941914088.

The previous prime is 2265566419. The next prime is 2265566491. The reversal of 2265566443 is 3446655622.

2265566443 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3446655622 = 2 ⋅1723327811.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2265566443 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2265566443.

It is not an unprimeable number, because it can be changed into a prime (2265566243) 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, 161826168 + ... + 161826181.

It is an arithmetic number, because the mean of its divisors is an integer number (647304700).

Almost surely, 2^2265566443 is an apocalyptic number.

2265566443 is a deficient number, since it is larger than the sum of its proper divisors (323652357).

2265566443 is an equidigital number, since it uses as much as digits as its factorization.

2265566443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 323652356.

The product of its digits is 1036800, while the sum is 43.

The square root of 2265566443 is about 47597.9667948117. The cubic root of 2265566443 is about 1313.3856527395.

It can be divided in two parts, 22655 and 66443, that added together give a palindrome (89098).

The spelling of 2265566443 in words is "two billion, two hundred sixty-five million, five hundred sixty-six thousand, four hundred forty-three".