30885225 has 48 divisors (see below), whose sum is σ = 59103360. Its totient is φ = 13939200.

The previous prime is 30885221. The next prime is 30885227. The reversal of 30885225 is 52258803.

It is not a de Polignac number, because 30885225 - 2² = 30885221 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30885221) 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, 46395 + ... + 47055.

It is an arithmetic number, because the mean of its divisors is an integer number (1231320).

Almost surely, 2^30885225 is an apocalyptic number.

30885225 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

30885225 is a deficient number, since it is larger than the sum of its proper divisors (28218135).

30885225 is a wasteful number, since it uses less digits than its factorization.

30885225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 770 (or 765 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 33.

The square root of 30885225 is about 5557.4477055569. The cubic root of 30885225 is about 313.7498955043.

The spelling of 30885225 in words is "thirty million, eight hundred eighty-five thousand, two hundred twenty-five".