40444230025 has 12 divisors (see below), whose sum is σ = 50667867292. Its totient is φ = 32021821440.

The previous prime is 40444230017. The next prime is 40444230031. The reversal of 40444230025 is 52003244404.

It can be written as a sum of positive squares in 6 ways, for example, as 3591365184 + 36852864841 = 59928^2 + 191971^2 .

It is not a de Polignac number, because 40444230025 - 2³ = 40444230017 is a prime.

It is a super-2 number, since 2×40444230025² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 40444229975 and 40444230002.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8336592 + ... + 8341441.

Almost surely, 2^40444230025 is an apocalyptic number.

It is an amenable number.

40444230025 is a deficient number, since it is larger than the sum of its proper divisors (10223637267).

40444230025 is a wasteful number, since it uses less digits than its factorization.

40444230025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16678140 (or 16678135 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 28.

Adding to 40444230025 its reverse (52003244404), we get a palindrome (92447474429).

The spelling of 40444230025 in words is "forty billion, four hundred forty-four million, two hundred thirty thousand, twenty-five".