216176225 has 12 divisors (see below), whose sum is σ = 270173184. Its totient is φ = 171576720.

The previous prime is 216176221. The next prime is 216176249. The reversal of 216176225 is 522671612.

It is not a de Polignac number, because 216176225 - 2² = 216176221 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 216176191 and 216176200.

It is not an unprimeable number, because it can be changed into a prime (216176221) 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, 30869 + ... + 37218.

It is an arithmetic number, because the mean of its divisors is an integer number (22514432).

Almost surely, 2^216176225 is an apocalyptic number.

216176225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

216176225 is a deficient number, since it is larger than the sum of its proper divisors (53996959).

216176225 is a wasteful number, since it uses less digits than its factorization.

216176225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68224 (or 68219 counting only the distinct ones).

The product of its digits is 10080, while the sum is 32.

The square root of 216176225 is about 14702.9325306212. The cubic root of 216176225 is about 600.1631269416.

The spelling of 216176225 in words is "two hundred sixteen million, one hundred seventy-six thousand, two hundred twenty-five".