30565625 has 12 divisors (see below), whose sum is σ = 38208492. Its totient is φ = 24450000.

The previous prime is 30565621. The next prime is 30565627. The reversal of 30565625 is 52656503.

It can be written as a sum of positive squares in 6 ways, for example, as 26020201 + 4545424 = 5101^2 + 2132^2 .

It is not a de Polignac number, because 30565625 - 2² = 30565621 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30565591 and 30565600.

It is not an unprimeable number, because it can be changed into a prime (30565621) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1766 + ... + 8015.

It is an arithmetic number, because the mean of its divisors is an integer number (3184041).

Almost surely, 2^30565625 is an apocalyptic number.

It is an amenable number.

30565625 is a deficient number, since it is larger than the sum of its proper divisors (7642867).

30565625 is an frugal number, since it uses more digits than its factorization.

30565625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9806 (or 9786 counting only the distinct ones).

The product of its (nonzero) digits is 27000, while the sum is 32.

The square root of 30565625 is about 5528.6187244193. The cubic root of 30565625 is about 312.6639140080.

The spelling of 30565625 in words is "thirty million, five hundred sixty-five thousand, six hundred twenty-five".