125108205871 has 16 divisors (see below), whose sum is σ = 137541212928. Its totient is φ = 112852555200.

The previous prime is 125108205863. The next prime is 125108205881. The reversal of 125108205871 is 178502801521.

It is not a de Polignac number, because 125108205871 - 2³ = 125108205863 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125108205851) 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 in 15 ways as a sum of consecutive naturals, for example, 3464716 + ... + 3500638.

It is an arithmetic number, because the mean of its divisors is an integer number (8596325808).

Almost surely, 2^125108205871 is an apocalyptic number.

125108205871 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

125108205871 is a deficient number, since it is larger than the sum of its proper divisors (12433007057).

125108205871 is a wasteful number, since it uses less digits than its factorization.

125108205871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38382.

The product of its (nonzero) digits is 44800, while the sum is 40.

The spelling of 125108205871 in words is "one hundred twenty-five billion, one hundred eight million, two hundred five thousand, eight hundred seventy-one".