166654214025 has 24 divisors (see below), whose sum is σ = 296729966400. Its totient is φ = 82045151040.

The previous prime is 166654214017. The next prime is 166654214087. The reversal of 166654214025 is 520412456661.

It is not a de Polignac number, because 166654214025 - 2³ = 166654214017 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 85462725 + ... + 85464674.

It is an arithmetic number, because the mean of its divisors is an integer number (12363748600).

Almost surely, 2^166654214025 is an apocalyptic number.

166654214025 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

166654214025 is a deficient number, since it is larger than the sum of its proper divisors (130075752375).

166654214025 is a wasteful number, since it uses less digits than its factorization.

166654214025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170927425 (or 170927420 counting only the distinct ones).

The product of its (nonzero) digits is 345600, while the sum is 42.

The spelling of 166654214025 in words is "one hundred sixty-six billion, six hundred fifty-four million, two hundred fourteen thousand, twenty-five".