27225216 has 48 divisors (see below), whose sum is σ = 78346710. Its totient is φ = 9074688.

The previous prime is 27225197. The next prime is 27225239. The reversal of 27225216 is 61252272.

It can be written as a sum of positive squares in only one way, i.e., 17640000 + 9585216 = 4200^2 + 3096^2 .

It is a tau number, because it is divible by the number of its divisors (48).

It is a self number, because there is not a number n which added to its sum of digits gives 27225216.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 10665 + ... + 12968.

Almost surely, 2^27225216 is an apocalyptic number.

It is an amenable number.

27225216 is an abundant number, since it is smaller than the sum of its proper divisors (51121494).

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

27225216 is a wasteful number, since it uses less digits than its factorization.

27225216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23653 (or 23638 counting only the distinct ones).

The product of its digits is 3360, while the sum is 27.

The square root of 27225216 is about 5217.7788377815. The cubic root of 27225216 is about 300.8318247602.

Adding to 27225216 its reverse (61252272), we get a palindrome (88477488).

The spelling of 27225216 in words is "twenty-seven million, two hundred twenty-five thousand, two hundred sixteen".