12565474 has 4 divisors (see below), whose sum is σ = 18848214. Its totient is φ = 6282736.

The previous prime is 12565471. The next prime is 12565481. The reversal of 12565474 is 47456521.

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

It can be written as a sum of positive squares in only one way, i.e., 7756225 + 4809249 = 2785^2 + 2193^2 .

It is a super-2 number, since 2×12565474² = 315782273689352, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is not an unprimeable number, because it can be changed into a prime (12565471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3141367 + ... + 3141370.

Almost surely, 2^12565474 is an apocalyptic number.

12565474 is a deficient number, since it is larger than the sum of its proper divisors (6282740).

12565474 is an equidigital number, since it uses as much as digits as its factorization.

12565474 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6282739.

The product of its digits is 33600, while the sum is 34.

The square root of 12565474 is about 3544.7812344346. The cubic root of 12565474 is about 232.4839407723.

The spelling of 12565474 in words is "twelve million, five hundred sixty-five thousand, four hundred seventy-four".