4021444433225 has 24 divisors (see below), whose sum is σ = 5165017251072. Its totient is φ = 3102750302400.

The previous prime is 4021444433191. The next prime is 4021444433239. The reversal of 4021444433225 is 5223344441204.

It is not a de Polignac number, because 4021444433225 - 2¹⁴ = 4021444416841 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8627807 + ... + 9081956.

It is an arithmetic number, because the mean of its divisors is an integer number (215209052128).

Almost surely, 2^{4021444433225} is an apocalyptic number.

It is an amenable number.

4021444433225 is a deficient number, since it is larger than the sum of its proper divisors (1143572817847).

4021444433225 is a wasteful number, since it uses less digits than its factorization.

4021444433225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17710097 (or 17710092 counting only the distinct ones).

The product of its (nonzero) digits is 368640, while the sum is 38.

Adding to 4021444433225 its reverse (5223344441204), we get a palindrome (9244788874429).

The spelling of 4021444433225 in words is "four trillion, twenty-one billion, four hundred forty-four million, four hundred thirty-three thousand, two hundred twenty-five".