27216325 has 12 divisors (see below), whose sum is σ = 33818148. Its totient is φ = 21728000.

The previous prime is 27216323. The next prime is 27216331. The reversal of 27216325 is 52361272.

It can be written as a sum of positive squares in 6 ways, for example, as 776161 + 26440164 = 881^2 + 5142^2 .

It is not a de Polignac number, because 27216325 - 2¹ = 27216323 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 27216293 and 27216302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27216323) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16749 + ... + 18301.

It is an arithmetic number, because the mean of its divisors is an integer number (2818179).

Almost surely, 2^27216325 is an apocalyptic number.

27216325 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

27216325 is a deficient number, since it is larger than the sum of its proper divisors (6601823).

27216325 is a wasteful number, since it uses less digits than its factorization.

27216325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2264 (or 2259 counting only the distinct ones).

The product of its digits is 5040, while the sum is 28.

The square root of 27216325 is about 5216.9267773278. The cubic root of 27216325 is about 300.7990734196.

Adding to 27216325 its reverse (52361272), we get a palindrome (79577597).

The spelling of 27216325 in words is "twenty-seven million, two hundred sixteen thousand, three hundred twenty-five".