440140225 has 36 divisors (see below), whose sum is σ = 658392384. Its totient is φ = 285884640.

The previous prime is 440140223. The next prime is 440140247. The reversal of 440140225 is 522041044.

It is a happy number.

It is not a de Polignac number, because 440140225 - 2¹ = 440140223 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 440140196 and 440140205.

It is not an unprimeable number, because it can be changed into a prime (440140223) by changing a digit.

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 35 ways as a sum of consecutive naturals, for example, 59692 + ... + 66658.

Almost surely, 2^440140225 is an apocalyptic number.

It is an amenable number.

440140225 is a deficient number, since it is larger than the sum of its proper divisors (218252159).

440140225 is a wasteful number, since it uses less digits than its factorization.

440140225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7022 (or 6998 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 22.

The square root of 440140225 is about 20979.5191794283. The cubic root of 440140225 is about 760.6712819052.

Adding to 440140225 its reverse (522041044), we get a palindrome (962181269).

The spelling of 440140225 in words is "four hundred forty million, one hundred forty thousand, two hundred twenty-five".