440004025 has 6 divisors (see below), whose sum is σ = 545605022. Its totient is φ = 352003200.

The previous prime is 440004023. The next prime is 440004029. The reversal of 440004025 is 520400044.

It can be written as a sum of positive squares in 3 ways, for example, as 11449 + 439992576 = 107^2 + 20976^2 .

It is not a de Polignac number, because 440004025 - 2¹ = 440004023 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 440003993 and 440004011.

It is not an unprimeable number, because it can be changed into a prime (440004023) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8800056 + ... + 8800105.

Almost surely, 2^440004025 is an apocalyptic number.

It is an amenable number.

440004025 is a deficient number, since it is larger than the sum of its proper divisors (105600997).

440004025 is a wasteful number, since it uses less digits than its factorization.

440004025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17600171 (or 17600166 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 19.

The square root of 440004025 is about 20976.2729053567. The cubic root of 440004025 is about 760.5928113700.

Adding to 440004025 its reverse (520400044), we get a palindrome (960404069).

The spelling of 440004025 in words is "four hundred forty million, four thousand, twenty-five".