12257285 has 8 divisors (see below), whose sum is σ = 15216120. Its totient is φ = 9467584.

The previous prime is 12257281. The next prime is 12257291. The reversal of 12257285 is 58275221.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 160801 + 12096484 = 401^2 + 3478^2 .

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 12257285 - 2² = 12257281 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12257281) 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, 42122 + ... + 42411.

It is an arithmetic number, because the mean of its divisors is an integer number (1902015).

Almost surely, 2^12257285 is an apocalyptic number.

It is an amenable number.

12257285 is a deficient number, since it is larger than the sum of its proper divisors (2958835).

12257285 is an equidigital number, since it uses as much as digits as its factorization.

12257285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84567.

The product of its digits is 11200, while the sum is 32.

The square root of 12257285 is about 3501.0405596051. The cubic root of 12257285 is about 230.5675021847.

The spelling of 12257285 in words is "twelve million, two hundred fifty-seven thousand, two hundred eighty-five".