12545305 has 4 divisors (see below), whose sum is σ = 15054372. Its totient is φ = 10036240.

The previous prime is 12545261. The next prime is 12545333. The reversal of 12545305 is 50354521.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6330256 + 6215049 = 2516^2 + 2493^2 .

It is not a de Polignac number, because 12545305 - 2⁷ = 12545177 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12545305.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1254526 + ... + 1254535.

It is an arithmetic number, because the mean of its divisors is an integer number (3763593).

Almost surely, 2^12545305 is an apocalyptic number.

It is an amenable number.

12545305 is a deficient number, since it is larger than the sum of its proper divisors (2509067).

12545305 is an equidigital number, since it uses as much as digits as its factorization.

12545305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2509066.

The product of its (nonzero) digits is 3000, while the sum is 25.

The square root of 12545305 is about 3541.9352055056. The cubic root of 12545305 is about 232.3594865306.

Adding to 12545305 its reverse (50354521), we get a palindrome (62899826).

The spelling of 12545305 in words is "twelve million, five hundred forty-five thousand, three hundred five".