125105163 has 4 divisors (see below), whose sum is σ = 166806888. Its totient is φ = 83403440.

The previous prime is 125105129. The next prime is 125105179. The reversal of 125105163 is 361501521.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 361501521 = 3 ⋅120500507.

It is a cyclic number.

It is not a de Polignac number, because 125105163 - 2¹³ = 125096971 is a prime.

It is not an unprimeable number, because it can be changed into a prime (125105663) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20850858 + ... + 20850863.

It is an arithmetic number, because the mean of its divisors is an integer number (41701722).

Almost surely, 2^125105163 is an apocalyptic number.

125105163 is a deficient number, since it is larger than the sum of its proper divisors (41701725).

125105163 is an equidigital number, since it uses as much as digits as its factorization.

125105163 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41701724.

The product of its (nonzero) digits is 900, while the sum is 24.

The square root of 125105163 is about 11185.0419310792. The cubic root of 125105163 is about 500.1401780299.

Adding to 125105163 its reverse (361501521), we get a palindrome (486606684).

The spelling of 125105163 in words is "one hundred twenty-five million, one hundred five thousand, one hundred sixty-three".