225272216 has 32 divisors (see below), whose sum is σ = 457455600. Its totient is φ = 103382400.

The previous prime is 225272197. The next prime is 225272237. The reversal of 225272216 is 612272522.

225272216 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12566 + ... + 24666.

Almost surely, 2^225272216 is an apocalyptic number.

225272216 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 225272216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (228727800).

225272216 is an abundant number, since it is smaller than the sum of its proper divisors (232183384).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

225272216 is a wasteful number, since it uses less digits than its factorization.

225272216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12299 (or 12295 counting only the distinct ones).

The product of its digits is 6720, while the sum is 29.

The square root of 225272216 is about 15009.0711238238. The cubic root of 225272216 is about 608.4653855488.

The spelling of 225272216 in words is "two hundred twenty-five million, two hundred seventy-two thousand, two hundred sixteen".