12505307 has 8 divisors (see below), whose sum is σ = 13470720. Its totient is φ = 11575080.

The previous prime is 12505291. The next prime is 12505313. The reversal of 12505307 is 70350521.

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 12505307 - 2⁴ = 12505291 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12505327) 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, 8057 + ... + 9482.

It is an arithmetic number, because the mean of its divisors is an integer number (1683840).

Almost surely, 2^12505307 is an apocalyptic number.

12505307 is a deficient number, since it is larger than the sum of its proper divisors (965413).

12505307 is a wasteful number, since it uses less digits than its factorization.

12505307 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17593.

The product of its (nonzero) digits is 1050, while the sum is 23.

The square root of 12505307 is about 3536.2843494267. The cubic root of 12505307 is about 232.1122809163.

Adding to 12505307 its reverse (70350521), we get a palindrome (82855828).

The spelling of 12505307 in words is "twelve million, five hundred five thousand, three hundred seven".