125215163 has 2 divisors, whose sum is σ = 125215164. Its totient is φ = 125215162.

The previous prime is 125215159. The next prime is 125215199. The reversal of 125215163 is 361512521.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 125215163 - 2² = 125215159 is a prime.

It is not a weakly prime, because it can be changed into another prime (125215063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62607581 + 62607582.

It is an arithmetic number, because the mean of its divisors is an integer number (62607582).

Almost surely, 2^125215163 is an apocalyptic number.

125215163 is a deficient number, since it is larger than the sum of its proper divisors (1).

125215163 is an equidigital number, since it uses as much as digits as its factorization.

125215163 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1800, while the sum is 26.

The square root of 125215163 is about 11189.9581321826. The cubic root of 125215163 is about 500.2867195524.

Adding to 125215163 its reverse (361512521), we get a palindrome (486727684).

The spelling of 125215163 in words is "one hundred twenty-five million, two hundred fifteen thousand, one hundred sixty-three".