40225 has 6 divisors (see below), whose sum is σ = 49910. Its totient is φ = 32160.

The previous prime is 40213. The next prime is 40231. The reversal of 40225 is 52204.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 11664 + 28561 = 108^2 + 169^2 .

It is not a de Polignac number, because 40225 - 2⁵ = 40193 is a prime.

40225 is a lucky number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 780 + ... + 829.

2⁴⁰²²⁵ is an apocalyptic number.

It is an amenable number.

40225 is a deficient number, since it is larger than the sum of its proper divisors (9685).

40225 is a wasteful number, since it uses less digits than its factorization.

40225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1619 (or 1614 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 13.

The square root of 40225 is about 200.5617112013. The cubic root of 40225 is about 34.2635231732.

Adding to 40225 its reverse (52204), we get a palindrome (92429).

The spelling of 40225 in words is "forty thousand, two hundred twenty-five".