16600225 has 6 divisors (see below), whose sum is σ = 20584310. Its totient is φ = 13280160.

The previous prime is 16600217. The next prime is 16600229. The reversal of 16600225 is 52200661.

It can be written as a sum of positive squares in 3 ways, for example, as 471969 + 16128256 = 687^2 + 4016^2 .

It is not a de Polignac number, because 16600225 - 2³ = 16600217 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 16600196 and 16600205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16600229) 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 5 ways as a sum of consecutive naturals, for example, 331980 + ... + 332029.

Almost surely, 2^16600225 is an apocalyptic number.

It is an amenable number.

16600225 is a deficient number, since it is larger than the sum of its proper divisors (3984085).

16600225 is an equidigital number, since it uses as much as digits as its factorization.

16600225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 664019 (or 664014 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 16600225 is about 4074.3373694381. The cubic root of 16600225 is about 255.0965929079.

Adding to 16600225 its reverse (52200661), we get a palindrome (68800886).

The spelling of 16600225 in words is "sixteen million, six hundred thousand, two hundred twenty-five".