12011225 has 6 divisors (see below), whose sum is σ = 14893950. Its totient is φ = 9608960.

The previous prime is 12011213. The next prime is 12011227. The reversal of 12011225 is 52211021.

It can be written as a sum of positive squares in 3 ways, for example, as 1597696 + 10413529 = 1264^2 + 3227^2 .

It is a de Polignac number, because none of the positive numbers 2^k-12011225 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12011227) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 240200 + ... + 240249.

It is an arithmetic number, because the mean of its divisors is an integer number (2482325).

Almost surely, 2^12011225 is an apocalyptic number.

It is an amenable number.

12011225 is a deficient number, since it is larger than the sum of its proper divisors (2882725).

12011225 is an equidigital number, since it uses as much as digits as its factorization.

12011225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 480459 (or 480454 counting only the distinct ones).

The product of its (nonzero) digits is 40, while the sum is 14.

The square root of 12011225 is about 3465.7214256198. The cubic root of 12011225 is about 229.0142119159.

Adding to 12011225 its reverse (52211021), we get a palindrome (64222246).

The spelling of 12011225 in words is "twelve million, eleven thousand, two hundred twenty-five".