43040225 has 24 divisors (see below), whose sum is σ = 56558880. Its totient is φ = 32490000.

The previous prime is 43040219. The next prime is 43040233. The reversal of 43040225 is 52204034.

43040225 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 43040225 - 2¹⁰ = 43039201 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 43040197 and 43040206.

It is an unprimeable number.

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 in 23 ways as a sum of consecutive naturals, for example, 171350 + ... + 171600.

It is an arithmetic number, because the mean of its divisors is an integer number (2356620).

Almost surely, 2^43040225 is an apocalyptic number.

It is an amenable number.

43040225 is a deficient number, since it is larger than the sum of its proper divisors (13518655).

43040225 is an equidigital number, since it uses as much as digits as its factorization.

43040225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 318 (or 275 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 20.

The square root of 43040225 is about 6560.5049348354. The cubic root of 43040225 is about 350.4490155477.

Adding to 43040225 its reverse (52204034), we get a palindrome (95244259).

The spelling of 43040225 in words is "forty-three million, forty thousand, two hundred twenty-five".