40828225 has 6 divisors (see below), whose sum is σ = 50627030. Its totient is φ = 32662560.

The previous prime is 40828223. The next prime is 40828247. The reversal of 40828225 is 52282804.

It can be written as a sum of positive squares in 3 ways, for example, as 6990736 + 33837489 = 2644^2 + 5817^2 .

It is not a de Polignac number, because 40828225 - 2¹ = 40828223 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40828223) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 816540 + ... + 816589.

Almost surely, 2^40828225 is an apocalyptic number.

It is an amenable number.

40828225 is a deficient number, since it is larger than the sum of its proper divisors (9798805).

40828225 is a wasteful number, since it uses less digits than its factorization.

40828225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1633139 (or 1633134 counting only the distinct ones).

The product of its (nonzero) digits is 10240, while the sum is 31.

The square root of 40828225 is about 6389.6967846683. The cubic root of 40828225 is about 344.3394909935.

The spelling of 40828225 in words is "forty million, eight hundred twenty-eight thousand, two hundred twenty-five".