166065546122025 has 96 divisors (see below), whose sum is σ = 300695488507008. Its totient is φ = 80201413324800.

The previous prime is 166065546122017. The next prime is 166065546122027. The reversal of 166065546122025 is 520221645560661.

It is not a de Polignac number, because 166065546122025 - 2³ = 166065546122017 is a prime.

It is not an unprimeable number, because it can be changed into a prime (166065546122027) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 482552817 + ... + 482896833.

It is an arithmetic number, because the mean of its divisors is an integer number (3132244671948).

Almost surely, 2^{166065546122025} is an apocalyptic number.

166065546122025 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

166065546122025 is a deficient number, since it is larger than the sum of its proper divisors (134629942384983).

166065546122025 is a wasteful number, since it uses less digits than its factorization.

166065546122025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 346331 (or 346326 counting only the distinct ones).

The product of its (nonzero) digits is 5184000, while the sum is 51.

The spelling of 166065546122025 in words is "one hundred sixty-six trillion, sixty-five billion, five hundred forty-six million, one hundred twenty-two thousand, twenty-five".