40331225 has 24 divisors (see below), whose sum is σ = 57773088. Its totient is φ = 27603200.

The previous prime is 40331209. The next prime is 40331227. The reversal of 40331225 is 52213304.

It is a happy number.

It is not a de Polignac number, because 40331225 - 2⁴ = 40331209 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 40331197 and 40331206.

It is not an unprimeable number, because it can be changed into a prime (40331227) 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, 362 + ... + 8988.

It is an arithmetic number, because the mean of its divisors is an integer number (2407212).

Almost surely, 2^40331225 is an apocalyptic number.

It is an amenable number.

40331225 is a deficient number, since it is larger than the sum of its proper divisors (17441863).

40331225 is a wasteful number, since it uses less digits than its factorization.

40331225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8665 (or 8660 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 40331225 is about 6350.6869707143. The cubic root of 40331225 is about 342.9365736518.

Adding to 40331225 its reverse (52213304), we get a palindrome (92544529).

The spelling of 40331225 in words is "forty million, three hundred thirty-one thousand, two hundred twenty-five".