12545257 has 8 divisors (see below), whose sum is σ = 12931400. Its totient is φ = 12161664.

The previous prime is 12545243. The next prime is 12545261. The reversal of 12545257 is 75254521.

It can be written as a sum of positive squares in 4 ways, for example, as 7722841 + 4822416 = 2779^2 + 2196^2 .

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 12545257 - 2⁷ = 12545129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12545237) 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, 14719 + ... + 15547.

It is an arithmetic number, because the mean of its divisors is an integer number (1616425).

Almost surely, 2^12545257 is an apocalyptic number.

It is an amenable number.

12545257 is a deficient number, since it is larger than the sum of its proper divisors (386143).

12545257 is an equidigital number, since it uses as much as digits as its factorization.

12545257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1275.

The product of its digits is 14000, while the sum is 31.

The square root of 12545257 is about 3541.9284295423. The cubic root of 12545257 is about 232.3591901842.

Adding to 12545257 its reverse (75254521), we get a palindrome (87799778).

The spelling of 12545257 in words is "twelve million, five hundred forty-five thousand, two hundred fifty-seven".