30151225 has 24 divisors (see below), whose sum is σ = 40669272. Its totient is φ = 22041600.

The previous prime is 30151211. The next prime is 30151237. The reversal of 30151225 is 52215103.

It can be written as a sum of positive squares in 12 ways, for example, as 25644096 + 4507129 = 5064^2 + 2123^2 .

It is not a de Polignac number, because 30151225 - 2⁹ = 30150713 is a prime.

It is a Duffinian number.

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, 36315 + ... + 37135.

It is an arithmetic number, because the mean of its divisors is an integer number (1694553).

Almost surely, 2^30151225 is an apocalyptic number.

It is an amenable number.

30151225 is a deficient number, since it is larger than the sum of its proper divisors (10518047).

30151225 is a wasteful number, since it uses less digits than its factorization.

30151225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 957 (or 952 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 19.

The square root of 30151225 is about 5491.0131123500. The cubic root of 30151225 is about 311.2444771416.

Adding to 30151225 its reverse (52215103), we get a palindrome (82366328).

The spelling of 30151225 in words is "thirty million, one hundred fifty-one thousand, two hundred twenty-five".