16920967225 has 12 divisors (see below), whose sum is σ = 21234797136. Its totient is φ = 13373678480.

The previous prime is 16920967223. The next prime is 16920967247. The reversal of 16920967225 is 52276902961.

16920967225 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 16920967225 - 2¹ = 16920967223 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16920967223) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 4075267 + ... + 4079416.

It is an arithmetic number, because the mean of its divisors is an integer number (1769566428).

Almost surely, 2^16920967225 is an apocalyptic number.

It is an amenable number.

16920967225 is a deficient number, since it is larger than the sum of its proper divisors (4313829911).

16920967225 is an equidigital number, since it uses as much as digits as its factorization.

16920967225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8154776 (or 8154771 counting only the distinct ones).

The product of its (nonzero) digits is 816480, while the sum is 49.

The spelling of 16920967225 in words is "sixteen billion, nine hundred twenty million, nine hundred sixty-seven thousand, two hundred twenty-five".