40240225 has 24 divisors (see below), whose sum is σ = 53210880. Its totient is φ = 30117120.

The previous prime is 40240223. The next prime is 40240237. The reversal of 40240225 is 52204204.

It is not a de Polignac number, because 40240225 - 2¹ = 40240223 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40240223) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 26281 + ... + 27769.

It is an arithmetic number, because the mean of its divisors is an integer number (2217120).

Almost surely, 2^40240225 is an apocalyptic number.

It is an amenable number.

40240225 is a deficient number, since it is larger than the sum of its proper divisors (12970655).

40240225 is a wasteful number, since it uses less digits than its factorization.

40240225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1569 (or 1564 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 19.

The square root of 40240225 is about 6343.5183455240. The cubic root of 40240225 is about 342.6784549626.

Adding to 40240225 its reverse (52204204), we get a palindrome (92444429).

The spelling of 40240225 in words is "forty million, two hundred forty thousand, two hundred twenty-five".