30520325 has 48 divisors (see below), whose sum is σ = 44193600. Its totient is φ = 20697600.

The previous prime is 30520261. The next prime is 30520331. The reversal of 30520325 is 52302503.

It is not a de Polignac number, because 30520325 - 2⁶ = 30520261 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 30520297 and 30520306.

It is a congruent 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 47 ways as a sum of consecutive naturals, for example, 342881 + ... + 342969.

It is an arithmetic number, because the mean of its divisors is an integer number (920700).

Almost surely, 2^30520325 is an apocalyptic number.

It is an amenable number.

30520325 is a deficient number, since it is larger than the sum of its proper divisors (13673275).

30520325 is a wasteful number, since it uses less digits than its factorization.

30520325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 182 (or 177 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 20.

The square root of 30520325 is about 5524.5203411699. The cubic root of 30520325 is about 312.5093757187.

Adding to 30520325 its reverse (52302503), we get a palindrome (82822828).

The spelling of 30520325 in words is "thirty million, five hundred twenty thousand, three hundred twenty-five".