125431166 has 8 divisors (see below), whose sum is σ = 215024880. Its totient is φ = 53756208.

The previous prime is 125431157. The next prime is 125431181. The reversal of 125431166 is 661134521.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4479671 + ... + 4479698.

It is an arithmetic number, because the mean of its divisors is an integer number (26878110).

Almost surely, 2^125431166 is an apocalyptic number.

125431166 is a deficient number, since it is larger than the sum of its proper divisors (89593714).

125431166 is an equidigital number, since it uses as much as digits as its factorization.

125431166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8959378.

The product of its digits is 4320, while the sum is 29.

The square root of 125431166 is about 11199.6056180564. The cubic root of 125431166 is about 500.5742282713.

Adding to 125431166 its reverse (661134521), we get a palindrome (786565687).

The spelling of 125431166 in words is "one hundred twenty-five million, four hundred thirty-one thousand, one hundred sixty-six".