12251257 has 6 divisors (see below), whose sum is σ = 12930378. Its totient is φ = 11606112.

The previous prime is 12251207. The next prime is 12251269. The reversal of 12251257 is 75215221.

12251257 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 12222016 + 29241 = 3496^2 + 171^2 .

It is not a de Polignac number, because 12251257 - 2¹⁵ = 12218489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12251207) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 16608 + ... + 17329.

It is an arithmetic number, because the mean of its divisors is an integer number (2155063).

Almost surely, 2^12251257 is an apocalyptic number.

It is an amenable number.

12251257 is a deficient number, since it is larger than the sum of its proper divisors (679121).

12251257 is an equidigital number, since it uses as much as digits as its factorization.

12251257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33975 (or 33956 counting only the distinct ones).

The product of its digits is 1400, while the sum is 25.

The square root of 12251257 is about 3500.1795668223. The cubic root of 12251257 is about 230.5296991202.

Adding to 12251257 its reverse (75215221), we get a palindrome (87466478).

The spelling of 12251257 in words is "twelve million, two hundred fifty-one thousand, two hundred fifty-seven".