30875125 has 8 divisors (see below), whose sum is σ = 38532312. Its totient is φ = 24700000.

The previous prime is 30875123. The next prime is 30875129. The reversal of 30875125 is 52157803.

It can be written as a sum of positive squares in 4 ways, for example, as 7969329 + 22905796 = 2823^2 + 4786^2 .

It is not a de Polignac number, because 30875125 - 2¹ = 30875123 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30875123) 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 7 ways as a sum of consecutive naturals, for example, 123376 + ... + 123625.

It is an arithmetic number, because the mean of its divisors is an integer number (4816539).

Almost surely, 2^30875125 is an apocalyptic number.

It is an amenable number.

30875125 is a deficient number, since it is larger than the sum of its proper divisors (7657187).

30875125 is an equidigital number, since it uses as much as digits as its factorization.

30875125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 247016 (or 247006 counting only the distinct ones).

The product of its (nonzero) digits is 8400, while the sum is 31.

The square root of 30875125 is about 5556.5389407436. The cubic root of 30875125 is about 313.7156912374.

The spelling of 30875125 in words is "thirty million, eight hundred seventy-five thousand, one hundred twenty-five".