30305025 has 27 divisors (see below), whose sum is σ = 54427971. Its totient is φ = 16118640.

The previous prime is 30305017. The next prime is 30305039. The reversal of 30305025 is 52050303.

The square root of 30305025 is 5505.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 10909809 + 19395216 = 3303^2 + 4404^2 .

It is not a de Polignac number, because 30305025 - 2³ = 30305017 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 30304989 and 30305007.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 82392 + ... + 82758.

Almost surely, 2^30305025 is an apocalyptic number.

30305025 is the 5505-th square number.

30305025 is the 2753-rd centered octagonal number.

It is an amenable number.

30305025 is a deficient number, since it is larger than the sum of its proper divisors (24122946).

30305025 is an equidigital number, since it uses as much as digits as its factorization.

30305025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 750 (or 375 counting only the distinct ones).

The product of its (nonzero) digits is 450, while the sum is 18.

The cubic root of 30305025 is about 311.7727943964.

Adding to 30305025 its reverse (52050303), we get a palindrome (82355328).

The spelling of 30305025 in words is "thirty million, three hundred five thousand, twenty-five".