125163889 has 4 divisors (see below), whose sum is σ = 125238256. Its totient is φ = 125089524.

The previous prime is 125163827. The next prime is 125163893. The reversal of 125163889 is 988361521.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 125163889 - 2⁷ = 125163761 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (125163589) 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 in 3 ways as a sum of consecutive naturals, for example, 34599 + ... + 38044.

It is an arithmetic number, because the mean of its divisors is an integer number (31309564).

Almost surely, 2^125163889 is an apocalyptic number.

It is an amenable number.

125163889 is a deficient number, since it is larger than the sum of its proper divisors (74367).

125163889 is an equidigital number, since it uses as much as digits as its factorization.

125163889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74366.

The product of its digits is 103680, while the sum is 43.

The square root of 125163889 is about 11187.6668255718. Note that the first 3 decimals coincide. The cubic root of 125163889 is about 500.2184232354.

The spelling of 125163889 in words is "one hundred twenty-five million, one hundred sixty-three thousand, eight hundred eighty-nine".