16612225 has 36 divisors (see below), whose sum is σ = 24427008. Its totient is φ = 11172000.

The previous prime is 16612171. The next prime is 16612229. The reversal of 16612225 is 52221661.

It is not a de Polignac number, because 16612225 - 2⁷ = 16612097 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 16612225.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16612229) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 86880 + ... + 87070.

It is an arithmetic number, because the mean of its divisors is an integer number (678528).

Almost surely, 2^16612225 is an apocalyptic number.

It is an amenable number.

16612225 is a deficient number, since it is larger than the sum of its proper divisors (7814783).

16612225 is a wasteful number, since it uses less digits than its factorization.

16612225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 286 (or 274 counting only the distinct ones).

The product of its digits is 1440, while the sum is 25.

The square root of 16612225 is about 4075.8097355004. The cubic root of 16612225 is about 255.1580463278.

Adding to 16612225 its reverse (52221661), we get a palindrome (68833886).

The spelling of 16612225 in words is "sixteen million, six hundred twelve thousand, two hundred twenty-five".