12563145 has 24 divisors (see below), whose sum is σ = 24887616. Its totient is φ = 5743008.

The previous prime is 12563143. The next prime is 12563167. The reversal of 12563145 is 54136521.

12563145 is a `hidden beast` number, since 1 + 25 + 631 + 4 + 5 = 666.

It is not a de Polignac number, because 12563145 - 2¹ = 12563143 is a prime.

It is a super-2 number, since 2×12563145² = 315665224582050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12563141) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19627 + ... + 20256.

It is an arithmetic number, because the mean of its divisors is an integer number (1036984).

Almost surely, 2^12563145 is an apocalyptic number.

12563145 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12563145 is a deficient number, since it is larger than the sum of its proper divisors (12324471).

12563145 is a wasteful number, since it uses less digits than its factorization.

12563145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39901 (or 39898 counting only the distinct ones).

The product of its digits is 3600, while the sum is 27.

The square root of 12563145 is about 3544.4527081060. The cubic root of 12563145 is about 232.4695763174.

Adding to 12563145 its reverse (54136521), we get a palindrome (66699666).

The spelling of 12563145 in words is "twelve million, five hundred sixty-three thousand, one hundred forty-five".