12501257 has 2 divisors, whose sum is σ = 12501258. Its totient is φ = 12501256.

The previous prime is 12501193. The next prime is 12501283. The reversal of 12501257 is 75210521.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7284601 + 5216656 = 2699^2 + 2284^2 .

It is an emirp because it is prime and its reverse (75210521) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12501257 - 2⁶ = 12501193 is a prime.

It is not a weakly prime, because it can be changed into another prime (12504257) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6250628 + 6250629.

It is an arithmetic number, because the mean of its divisors is an integer number (6250629).

Almost surely, 2^12501257 is an apocalyptic number.

It is an amenable number.

12501257 is a deficient number, since it is larger than the sum of its proper divisors (1).

12501257 is an equidigital number, since it uses as much as digits as its factorization.

12501257 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 700, while the sum is 23.

The square root of 12501257 is about 3535.7116681087. The cubic root of 12501257 is about 232.0872207228.

Adding to 12501257 its reverse (75210521), we get a palindrome (87711778).

The spelling of 12501257 in words is "twelve million, five hundred one thousand, two hundred fifty-seven".