16716225 has 12 divisors (see below), whose sum is σ = 27637616. Its totient is φ = 8915280.

The previous prime is 16716221. The next prime is 16716229. The reversal of 16716225 is 52261761.

It is an interprime number because it is at equal distance from previous prime (16716221) and next prime (16716229).

It is not a de Polignac number, because 16716225 - 2² = 16716221 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 16716192 and 16716201.

It is not an unprimeable number, because it can be changed into a prime (16716221) 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, 111367 + ... + 111516.

Almost surely, 2^16716225 is an apocalyptic number.

16716225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

16716225 is a deficient number, since it is larger than the sum of its proper divisors (10921391).

16716225 is a wasteful number, since it uses less digits than its factorization.

16716225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 222896 (or 222891 counting only the distinct ones).

The product of its digits is 5040, while the sum is 30.

The square root of 16716225 is about 4088.5480307806. The cubic root of 16716225 is about 255.6894070565.

Adding to 16716225 its reverse (52261761), we get a palindrome (68977986).

The spelling of 16716225 in words is "sixteen million, seven hundred sixteen thousand, two hundred twenty-five".