30538625 has 16 divisors (see below), whose sum is σ = 41046096. Its totient is φ = 22550400.

The previous prime is 30538621. The next prime is 30538631. The reversal of 30538625 is 52683503.

It can be written as a sum of positive squares in 8 ways, for example, as 12117361 + 18421264 = 3481^2 + 4292^2 .

It is not a de Polignac number, because 30538625 - 2² = 30538621 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 30538591 and 30538600.

It is not an unprimeable number, because it can be changed into a prime (30538621) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7772 + ... + 11021.

It is an arithmetic number, because the mean of its divisors is an integer number (2565381).

Almost surely, 2^30538625 is an apocalyptic number.

It is an amenable number.

30538625 is a deficient number, since it is larger than the sum of its proper divisors (10507471).

30538625 is a wasteful number, since it uses less digits than its factorization.

30538625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18821 (or 18811 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 32.

The square root of 30538625 is about 5526.1763453585. The cubic root of 30538625 is about 312.5718234912.

The spelling of 30538625 in words is "thirty million, five hundred thirty-eight thousand, six hundred twenty-five".