30165225 has 48 divisors (see below), whose sum is σ = 53835840. Its totient is φ = 14848000.

The previous prime is 30165221. The next prime is 30165257. The reversal of 30165225 is 52256103.

It is not a de Polignac number, because 30165225 - 2² = 30165221 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 30165195 and 30165204.

It is not an unprimeable number, because it can be changed into a prime (30165221) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 75025 + ... + 75425.

It is an arithmetic number, because the mean of its divisors is an integer number (1121580).

Almost surely, 2^30165225 is an apocalyptic number.

It is an amenable number.

30165225 is a deficient number, since it is larger than the sum of its proper divisors (23670615).

30165225 is a wasteful number, since it uses less digits than its factorization.

30165225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 490 (or 485 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 24.

The square root of 30165225 is about 5492.2877746892. The cubic root of 30165225 is about 311.2926426632.

The spelling of 30165225 in words is "thirty million, one hundred sixty-five thousand, two hundred twenty-five".