40043225 has 6 divisors (see below), whose sum is σ = 49653630. Its totient is φ = 32034560.

The previous prime is 40043209. The next prime is 40043233. The reversal of 40043225 is 52234004.

It can be written as a sum of positive squares in 3 ways, for example, as 9096256 + 30946969 = 3016^2 + 5563^2 .

It is not a de Polignac number, because 40043225 - 2⁴ = 40043209 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 40043197 and 40043206.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 800840 + ... + 800889.

It is an arithmetic number, because the mean of its divisors is an integer number (8275605).

Almost surely, 2^40043225 is an apocalyptic number.

It is an amenable number.

40043225 is a deficient number, since it is larger than the sum of its proper divisors (9610405).

40043225 is a wasteful number, since it uses less digits than its factorization.

40043225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1601739 (or 1601734 counting only the distinct ones).

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

The square root of 40043225 is about 6327.9716339440. The cubic root of 40043225 is about 342.1183345052.

Adding to 40043225 its reverse (52234004), we get a palindrome (92277229).

The spelling of 40043225 in words is "forty million, forty-three thousand, two hundred twenty-five".