125818163 has 2 divisors, whose sum is σ = 125818164. Its totient is φ = 125818162.

The previous prime is 125818157. The next prime is 125818219. The reversal of 125818163 is 361818521.

It is a weak prime.

It is an emirp because it is prime and its reverse (361818521) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 125818163 - 2¹⁴ = 125801779 is a prime.

It is a Sophie Germain prime.

It is an alternating number because its digits alternate between odd and even.

It is not a weakly prime, because it can be changed into another prime (125818103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62909081 + 62909082.

It is an arithmetic number, because the mean of its divisors is an integer number (62909082).

Almost surely, 2^125818163 is an apocalyptic number.

125818163 is a deficient number, since it is larger than the sum of its proper divisors (1).

125818163 is an equidigital number, since it uses as much as digits as its factorization.

125818163 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11520, while the sum is 35.

The square root of 125818163 is about 11216.8695722113. The cubic root of 125818163 is about 501.0885125612.

The spelling of 125818163 in words is "one hundred twenty-five million, eight hundred eighteen thousand, one hundred sixty-three".