125671161 has 16 divisors (see below), whose sum is σ = 208908288. Its totient is φ = 65283600.

The previous prime is 125671159. The next prime is 125671193. The reversal of 125671161 is 161176521.

It is not a de Polignac number, because 125671161 - 2¹ = 125671159 is a prime.

It is not an unprimeable number, because it can be changed into a prime (125671141) 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, 271785 + ... + 272246.

It is an arithmetic number, because the mean of its divisors is an integer number (13056768).

Almost surely, 2^125671161 is an apocalyptic number.

125671161 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

125671161 is a deficient number, since it is larger than the sum of its proper divisors (83237127).

125671161 is a wasteful number, since it uses less digits than its factorization.

125671161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 544052.

The product of its digits is 2520, while the sum is 30.

The square root of 125671161 is about 11210.3149375921. The cubic root of 125671161 is about 500.8932844686.

The spelling of 125671161 in words is "one hundred twenty-five million, six hundred seventy-one thousand, one hundred sixty-one".