30138225 has 24 divisors (see below), whose sum is σ = 53663232. Its totient is φ = 14836800.

The previous prime is 30138217. The next prime is 30138271. The reversal of 30138225 is 52283103.

It is not a de Polignac number, because 30138225 - 2³ = 30138217 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 30138195 and 30138204.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14481 + ... + 16430.

It is an arithmetic number, because the mean of its divisors is an integer number (2235968).

Almost surely, 2^30138225 is an apocalyptic number.

It is an amenable number.

30138225 is a deficient number, since it is larger than the sum of its proper divisors (23525007).

30138225 is a wasteful number, since it uses less digits than its factorization.

30138225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30937 (or 30932 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 30138225 is about 5489.8292323168. The cubic root of 30138225 is about 311.1997386624.

The spelling of 30138225 in words is "thirty million, one hundred thirty-eight thousand, two hundred twenty-five".