12216325 has 24 divisors (see below), whose sum is σ = 17070336. Its totient is φ = 8592000.

The previous prime is 12216313. The next prime is 12216349. The reversal of 12216325 is 52361221.

12216325 = 687² + 688² + ... + 711².

It is not a de Polignac number, because 12216325 - 2¹⁵ = 12183557 is a prime.

It is a hoax number, since the sum of its digits (22) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 12216296 and 12216305.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7809 + ... + 9241.

It is an arithmetic number, because the mean of its divisors is an integer number (711264).

Almost surely, 2^12216325 is an apocalyptic number.

It is an amenable number.

12216325 is a deficient number, since it is larger than the sum of its proper divisors (4854011).

12216325 is a wasteful number, since it uses less digits than its factorization.

12216325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1485 (or 1480 counting only the distinct ones).

The product of its digits is 720, while the sum is 22.

The square root of 12216325 is about 3495.1859750234. The cubic root of 12216325 is about 230.3103874935.

Adding to 12216325 its reverse (52361221), we get a palindrome (64577546).

Subtracting 12216325 from its reverse (52361221), we obtain a square (40144896 = 6336²).

The spelling of 12216325 in words is "twelve million, two hundred sixteen thousand, three hundred twenty-five".