12028225 has 24 divisors (see below), whose sum is σ = 16427520. Its totient is φ = 8664000.

The previous prime is 12028213. The next prime is 12028249. The reversal of 12028225 is 52282021.

It is not a de Polignac number, because 12028225 - 2¹⁵ = 11995457 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12028196 and 12028205.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 52411 + ... + 52639.

It is an arithmetic number, because the mean of its divisors is an integer number (684480).

Almost surely, 2^12028225 is an apocalyptic number.

It is an amenable number.

12028225 is a deficient number, since it is larger than the sum of its proper divisors (4399295).

12028225 is a wasteful number, since it uses less digits than its factorization.

12028225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 441 (or 436 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 22.

The square root of 12028225 is about 3468.1731502334. The cubic root of 12028225 is about 229.1222055160.

The spelling of 12028225 in words is "twelve million, twenty-eight thousand, two hundred twenty-five".