440240225 has 6 divisors (see below), whose sum is σ = 545897910. Its totient is φ = 352192160.

The previous prime is 440240221. The next prime is 440240239. The reversal of 440240225 is 522042044.

It can be written as a sum of positive squares in 3 ways, for example, as 84125584 + 356114641 = 9172^2 + 18871^2 .

It is not a de Polignac number, because 440240225 - 2² = 440240221 is a prime.

It is a super-2 number, since 2×440240225² = 387622911416101250, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 440240225.

It is not an unprimeable number, because it can be changed into a prime (440240221) 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 5 ways as a sum of consecutive naturals, for example, 8804780 + ... + 8804829.

It is an arithmetic number, because the mean of its divisors is an integer number (90982985).

Almost surely, 2^440240225 is an apocalyptic number.

It is an amenable number.

440240225 is a deficient number, since it is larger than the sum of its proper divisors (105657685).

440240225 is a wasteful number, since it uses less digits than its factorization.

440240225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17609619 (or 17609614 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 23.

The square root of 440240225 is about 20981.9023208097. The cubic root of 440240225 is about 760.7288857958.

Adding to 440240225 its reverse (522042044), we get a palindrome (962282269).

The spelling of 440240225 in words is "four hundred forty million, two hundred forty thousand, two hundred twenty-five".