43225309 has 2 divisors, whose sum is σ = 43225310. Its totient is φ = 43225308.

The previous prime is 43225279. The next prime is 43225319. The reversal of 43225309 is 90352234.

43225309 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 40832100 + 2393209 = 6390^2 + 1547^2 .

It is a cyclic number.

It is not a de Polignac number, because 43225309 - 2⁷ = 43225181 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (43225319) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21612654 + 21612655.

It is an arithmetic number, because the mean of its divisors is an integer number (21612655).

Almost surely, 2^43225309 is an apocalyptic number.

It is an amenable number.

43225309 is a deficient number, since it is larger than the sum of its proper divisors (1).

43225309 is an equidigital number, since it uses as much as digits as its factorization.

43225309 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6480, while the sum is 28.

The square root of 43225309 is about 6574.5957290163. The cubic root of 43225309 is about 350.9506373983.

It can be divided in two parts, 43225 and 309, that added together give a palindrome (43534).

The spelling of 43225309 in words is "forty-three million, two hundred twenty-five thousand, three hundred nine".