166666325 has 12 divisors (see below), whose sum is σ = 236190240. Its totient is φ = 114285360.

The previous prime is 166666301. The next prime is 166666399. The reversal of 166666325 is 523666661.

It is a happy number.

166666325 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 166666325 - 2⁸ = 166666069 is a prime.

It is a super-4 number, since 4×166666325⁴ (a number of 34 digits) contains 4444 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 476015 + ... + 476364.

It is an arithmetic number, because the mean of its divisors is an integer number (19682520).

Almost surely, 2^166666325 is an apocalyptic number.

It is an amenable number.

166666325 is a deficient number, since it is larger than the sum of its proper divisors (69523915).

166666325 is an equidigital number, since it uses as much as digits as its factorization.

166666325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 952396 (or 952391 counting only the distinct ones).

The product of its digits is 233280, while the sum is 41.

The square root of 166666325 is about 12909.9312546582. The cubic root of 166666325 is about 550.3208320960.

The spelling of 166666325 in words is "one hundred sixty-six million, six hundred sixty-six thousand, three hundred twenty-five".