30500225 has 24 divisors (see below), whose sum is σ = 45503040. Its totient is φ = 19811520.

The previous prime is 30500219. The next prime is 30500279. The reversal of 30500225 is 52200503.

It is not a de Polignac number, because 30500225 - 2⁸ = 30499969 is a prime.

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 23 ways as a sum of consecutive naturals, for example, 1262 + ... + 7911.

It is an arithmetic number, because the mean of its divisors is an integer number (1895960).

Almost surely, 2^30500225 is an apocalyptic number.

30500225 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

30500225 is a deficient number, since it is larger than the sum of its proper divisors (15002815).

30500225 is a wasteful number, since it uses less digits than its factorization.

30500225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9209 (or 9204 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 17.

The square root of 30500225 is about 5522.7008790989. The cubic root of 30500225 is about 312.4407567695.

Adding to 30500225 its reverse (52200503), we get a palindrome (82700728).

The spelling of 30500225 in words is "thirty million, five hundred thousand, two hundred twenty-five".