16213332225 has 96 divisors (see below), whose sum is σ = 30051648000. Its totient is φ = 7664993280.

The previous prime is 16213332197. The next prime is 16213332251. The reversal of 16213332225 is 52223331261.

It is not a de Polignac number, because 16213332225 - 2⁷ = 16213332097 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 16213332192 and 16213332201.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 4334406 + ... + 4338144.

It is an arithmetic number, because the mean of its divisors is an integer number (313038000).

Almost surely, 2^16213332225 is an apocalyptic number.

16213332225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

16213332225 is a deficient number, since it is larger than the sum of its proper divisors (13838315775).

16213332225 is a wasteful number, since it uses less digits than its factorization.

16213332225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3967 (or 3962 counting only the distinct ones).

The product of its digits is 12960, while the sum is 30.

Adding to 16213332225 its reverse (52223331261), we get a palindrome (68436663486).

The spelling of 16213332225 in words is "sixteen billion, two hundred thirteen million, three hundred thirty-two thousand, two hundred twenty-five".