166077125 has 8 divisors (see below), whose sum is σ = 207264408. Its totient is φ = 132861600.

The previous prime is 166077091. The next prime is 166077133. The reversal of 166077125 is 521770661.

It can be written as a sum of positive squares in 4 ways, for example, as 543169 + 165533956 = 737^2 + 12866^2 .

It is not a de Polignac number, because 166077125 - 2¹⁰ = 166076101 is a prime.

It is a super-2 number, since 2×166077125² = 55163222896531250, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 664184 + ... + 664433.

It is an arithmetic number, because the mean of its divisors is an integer number (25908051).

Almost surely, 2^166077125 is an apocalyptic number.

It is an amenable number.

166077125 is a deficient number, since it is larger than the sum of its proper divisors (41187283).

166077125 is an equidigital number, since it uses as much as digits as its factorization.

166077125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1328632 (or 1328622 counting only the distinct ones).

The product of its (nonzero) digits is 17640, while the sum is 35.

The square root of 166077125 is about 12887.0914096238. The cubic root of 166077125 is about 549.6715670004.

It can be divided in two parts, 16607 and 7125, that added together give a palindrome (23732).

The spelling of 166077125 in words is "one hundred sixty-six million, seventy-seven thousand, one hundred twenty-five".