9129225 has 24 divisors (see below), whose sum is σ = 17250880. Its totient is φ = 4173120.

The previous prime is 9129203. The next prime is 9129257. The reversal of 9129225 is 5229219.

It is not a de Polignac number, because 9129225 - 2⁵ = 9129193 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 9129192 and 9129201.

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, 8170 + ... + 9219.

Almost surely, 2^9129225 is an apocalyptic number.

It is an amenable number.

9129225 is a deficient number, since it is larger than the sum of its proper divisors (8121655).

9129225 is a wasteful number, since it uses less digits than its factorization.

9129225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17409 (or 17404 counting only the distinct ones).

The product of its digits is 3240, while the sum is 30.

The square root of 9129225 is about 3021.4607394438. The cubic root of 9129225 is about 208.9992063644. Note that the first 3 decimals are identical.

The spelling of 9129225 in words is "nine million, one hundred twenty-nine thousand, two hundred twenty-five".