16303225 has 12 divisors (see below), whose sum is σ = 20277100. Its totient is φ = 13003200.

The previous prime is 16303211. The next prime is 16303229. The reversal of 16303225 is 52230361.

It can be written as a sum of positive squares in 6 ways, for example, as 4932841 + 11370384 = 2221^2 + 3372^2 .

It is not a de Polignac number, because 16303225 - 2⁵ = 16303193 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 16303196 and 16303205.

It is not an unprimeable number, because it can be changed into a prime (16303229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9751 + ... + 11299.

Almost surely, 2^16303225 is an apocalyptic number.

It is an amenable number.

16303225 is a deficient number, since it is larger than the sum of its proper divisors (3973875).

16303225 is a wasteful number, since it uses less digits than its factorization.

16303225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1980 (or 1975 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 22.

The square root of 16303225 is about 4037.7252259162. The cubic root of 16303225 is about 253.5660901380.

Adding to 16303225 its reverse (52230361), we get a palindrome (68533586).

The spelling of 16303225 in words is "sixteen million, three hundred three thousand, two hundred twenty-five".