12530305 has 8 divisors (see below), whose sum is σ = 15057000. Its totient is φ = 10010496.

The previous prime is 12530303. The next prime is 12530311. The reversal of 12530305 is 50303521.

12530305 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 2039184 + 10491121 = 1428^2 + 3239^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12530305 - 2¹ = 12530303 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12530303) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4051 + ... + 6439.

It is an arithmetic number, because the mean of its divisors is an integer number (1882125).

Almost surely, 2^12530305 is an apocalyptic number.

It is an amenable number.

12530305 is a deficient number, since it is larger than the sum of its proper divisors (2526695).

12530305 is a wasteful number, since it uses less digits than its factorization.

12530305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3443.

The product of its (nonzero) digits is 450, while the sum is 19.

The square root of 12530305 is about 3539.8170856698. The cubic root of 12530305 is about 232.2668414509.

Adding to 12530305 its reverse (50303521), we get a palindrome (62833826).

The spelling of 12530305 in words is "twelve million, five hundred thirty thousand, three hundred five".