125166 has 16 divisors (see below), whose sum is σ = 261504. Its totient is φ = 39864.

The previous prime is 125149. The next prime is 125183. The reversal of 125166 is 661521.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (125149) and next prime (125183).

It is a congruent number.

It is an unprimeable number.

125166 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 316 + ... + 591.

It is an arithmetic number, because the mean of its divisors is an integer number (16344).

2¹²⁵¹⁶⁶ is an apocalyptic number.

125166 is an abundant number, since it is smaller than the sum of its proper divisors (136338).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

125166 is a wasteful number, since it uses less digits than its factorization.

125166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 935.

The product of its digits is 360, while the sum is 21.

The square root of 125166 is about 353.7880721562. The cubic root of 125166 is about 50.0221235429.

Adding to 125166 its reverse (661521), we get a palindrome (786687).

The spelling of 125166 in words is "one hundred twenty-five thousand, one hundred sixty-six".