12285681 has 8 divisors (see below), whose sum is σ = 16605600. Its totient is φ = 8078112.

The previous prime is 12285677. The next prime is 12285683. The reversal of 12285681 is 18658221.

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

It is not a de Polignac number, because 12285681 - 2² = 12285677 is a prime.

It is a super-2 number, since 2×12285681² = 301875915267522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12285683) 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, 27831 + ... + 28268.

It is an arithmetic number, because the mean of its divisors is an integer number (2075700).

Almost surely, 2^12285681 is an apocalyptic number.

It is an amenable number.

12285681 is a deficient number, since it is larger than the sum of its proper divisors (4319919).

12285681 is an equidigital number, since it uses as much as digits as its factorization.

12285681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56175.

The product of its digits is 7680, while the sum is 33.

The square root of 12285681 is about 3505.0935793499. The cubic root of 12285681 is about 230.7454139437.

Adding to 12285681 its product of digits (7680), we get a triangular number (12293361 = T₄₉₅₈).

The spelling of 12285681 in words is "twelve million, two hundred eighty-five thousand, six hundred eighty-one".