30243825 has 18 divisors (see below), whose sum is σ = 54170454. Its totient is φ = 16129920.

The previous prime is 30243823. The next prime is 30243841. The reversal of 30243825 is 52834203.

It can be written as a sum of positive squares in 3 ways, for example, as 6155361 + 24088464 = 2481^2 + 4908^2 .

It is not a de Polignac number, because 30243825 - 2¹ = 30243823 is a prime.

It is not an unprimeable number, because it can be changed into a prime (30243823) by changing a digit.

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 17 ways as a sum of consecutive naturals, for example, 66984 + ... + 67433.

Almost surely, 2^30243825 is an apocalyptic number.

It is an amenable number.

30243825 is a deficient number, since it is larger than the sum of its proper divisors (23926629).

30243825 is a wasteful number, since it uses less digits than its factorization.

30243825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134433 (or 134425 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

The square root of 30243825 is about 5499.4386077126. The cubic root of 30243825 is about 311.5627813310.

The spelling of 30243825 in words is "thirty million, two hundred forty-three thousand, eight hundred twenty-five".