12752257 has 8 divisors (see below), whose sum is σ = 15076800. Its totient is φ = 10553424.

The previous prime is 12752251. The next prime is 12752273. The reversal of 12752257 is 75225721.

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

It is not a de Polignac number, because 12752257 - 2¹¹ = 12750209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12752251) 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, 31207 + ... + 31612.

It is an arithmetic number, because the mean of its divisors is an integer number (1884600).

Almost surely, 2^12752257 is an apocalyptic number.

It is an amenable number.

12752257 is a deficient number, since it is larger than the sum of its proper divisors (2324543).

12752257 is an equidigital number, since it uses as much as digits as its factorization.

12752257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62855.

The product of its digits is 9800, while the sum is 31.

The square root of 12752257 is about 3571.0302435012. The cubic root of 12752257 is about 233.6302205011.

Adding to 12752257 its reverse (75225721), we get a palindrome (87977978).

The spelling of 12752257 in words is "twelve million, seven hundred fifty-two thousand, two hundred fifty-seven".