9211225 has 9 divisors (see below), whose sum is σ = 11440767. Its totient is φ = 7356840.

The previous prime is 9211207. The next prime is 9211231. The reversal of 9211225 is 5221129.

The square root of 9211225 is 3035.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 3316041 + 5895184 = 1821^2 + 2428^2 .

It is not a de Polignac number, because 9211225 - 2⁹ = 9210713 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 9211196 and 9211205.

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 8 ways as a sum of consecutive naturals, for example, 14872 + ... + 15478.

Almost surely, 2^9211225 is an apocalyptic number.

9211225 is the 3035-th square number.

9211225 is the 1518-th centered octagonal number.

It is an amenable number.

9211225 is a deficient number, since it is larger than the sum of its proper divisors (2229542).

9211225 is an frugal number, since it uses more digits than its factorization.

9211225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1224 (or 612 counting only the distinct ones).

The product of its digits is 360, while the sum is 22.

The cubic root of 9211225 is about 209.6230956743.

The spelling of 9211225 in words is "nine million, two hundred eleven thousand, two hundred twenty-five".