305828125 has 42 divisors (see below), whose sum is σ = 410424434. Its totient is φ = 227700000.

The previous prime is 305828087. The next prime is 305828129. The reversal of 305828125 is 521828503.

It can be written as a sum of positive squares in 7 ways, for example, as 294396964 + 11431161 = 17158^2 + 3381^2 .

It is not a de Polignac number, because 305828125 - 2¹¹ = 305826077 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 (305828129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 41 ways as a sum of consecutive naturals, for example, 8265607 + ... + 8265643.

Almost surely, 2^305828125 is an apocalyptic number.

It is an amenable number.

305828125 is a deficient number, since it is larger than the sum of its proper divisors (104596309).

305828125 is an frugal number, since it uses more digits than its factorization.

305828125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113 (or 65 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 34.

The square root of 305828125 is about 17487.9422746074. The cubic root of 305828125 is about 673.7402200142.

The spelling of 305828125 in words is "three hundred five million, eight hundred twenty-eight thousand, one hundred twenty-five".