43225565 has 4 divisors (see below), whose sum is σ = 51870684. Its totient is φ = 34580448.

The previous prime is 43225547. The next prime is 43225597. The reversal of 43225565 is 56552234.

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 16949689 + 26275876 = 4117^2 + 5126^2 .

It is a cyclic number.

It is not a de Polignac number, because 43225565 - 2⁸ = 43225309 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4322552 + ... + 4322561.

It is an arithmetic number, because the mean of its divisors is an integer number (12967671).

Almost surely, 2^43225565 is an apocalyptic number.

It is an amenable number.

43225565 is a deficient number, since it is larger than the sum of its proper divisors (8645119).

43225565 is an equidigital number, since it uses as much as digits as its factorization.

43225565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8645118.

The product of its digits is 36000, while the sum is 32.

The square root of 43225565 is about 6574.6151978652. The cubic root of 43225565 is about 350.9513302268.

Adding to 43225565 its reverse (56552234), we get a palindrome (99777799).

The spelling of 43225565 in words is "forty-three million, two hundred twenty-five thousand, five hundred sixty-five".