12250891 has 2 divisors, whose sum is σ = 12250892. Its totient is φ = 12250890.

The previous prime is 12250873. The next prime is 12250913. The reversal of 12250891 is 19805221.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12250891 - 2⁹ = 12250379 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (12250831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6125445 + 6125446.

It is an arithmetic number, because the mean of its divisors is an integer number (6125446).

Almost surely, 2^12250891 is an apocalyptic number.

12250891 is a deficient number, since it is larger than the sum of its proper divisors (1).

12250891 is an equidigital number, since it uses as much as digits as its factorization.

12250891 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1440, while the sum is 28.

The square root of 12250891 is about 3500.1272833998. The cubic root of 12250891 is about 230.5274034453.

The spelling of 12250891 in words is "twelve million, two hundred fifty thousand, eight hundred ninety-one".