16004433225 has 24 divisors (see below), whose sum is σ = 28866179232. Its totient is φ = 7759724800.

The previous prime is 16004433187. The next prime is 16004433239. The reversal of 16004433225 is 52233440061.

16004433225 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 16004433225 - 2²² = 16000238921 is a prime.

It is a super-2 number, since 2×16004433225² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 16004433192 and 16004433201.

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, 9698832 + ... + 9700481.

It is an arithmetic number, because the mean of its divisors is an integer number (1202757468).

Almost surely, 2^16004433225 is an apocalyptic number.

16004433225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

16004433225 is a deficient number, since it is larger than the sum of its proper divisors (12861746007).

16004433225 is a wasteful number, since it uses less digits than its factorization.

16004433225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19399337 (or 19399332 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 30.

Adding to 16004433225 its reverse (52233440061), we get a palindrome (68237873286).

The spelling of 16004433225 in words is "sixteen billion, four million, four hundred thirty-three thousand, two hundred twenty-five".