440825 has 24 divisors (see below), whose sum is σ = 684480. Its totient is φ = 273600.

The previous prime is 440821. The next prime is 440831. The reversal of 440825 is 528044.

It is not a de Polignac number, because 440825 - 2² = 440821 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 440825.

It is not an unprimeable number, because it can be changed into a prime (440821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1811 + ... + 2039.

It is an arithmetic number, because the mean of its divisors is an integer number (28520).

2⁴⁴⁰⁸²⁵ is an apocalyptic number.

It is an amenable number.

440825 is a deficient number, since it is larger than the sum of its proper divisors (243655).

440825 is a wasteful number, since it uses less digits than its factorization.

440825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 257 (or 252 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 23.

The square root of 440825 is about 663.9465339920. The cubic root of 440825 is about 76.1065564413.

Adding to 440825 its reverse (528044), we get a palindrome (968869).

The spelling of 440825 in words is "four hundred forty thousand, eight hundred twenty-five".