127666125 has 64 divisors (see below), whose sum is σ = 239466240. Its totient is φ = 67942800.

The previous prime is 127666117. The next prime is 127666129. The reversal of 127666125 is 521666721.

It is a happy number.

It is not a de Polignac number, because 127666125 - 2³ = 127666117 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 127666125.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (127666129) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 273142 + ... + 273608.

It is an arithmetic number, because the mean of its divisors is an integer number (3741660).

Almost surely, 2^127666125 is an apocalyptic number.

127666125 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

127666125 is a deficient number, since it is larger than the sum of its proper divisors (111800115).

127666125 is an frugal number, since it uses more digits than its factorization.

127666125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 503 (or 475 counting only the distinct ones).

The product of its digits is 30240, while the sum is 36.

The square root of 127666125 is about 11298.9435346850. The cubic root of 127666125 is about 503.5298549395.

The spelling of 127666125 in words is "one hundred twenty-seven million, six hundred sixty-six thousand, one hundred twenty-five".