166304126725 has 96 divisors (see below), whose sum is σ = 244141516800. Its totient is φ = 111079180800.

The previous prime is 166304126717. The next prime is 166304126741. The reversal of 166304126725 is 527621403661.

It is not a de Polignac number, because 166304126725 - 2³ = 166304126717 is a prime.

It is a super-3 number, since 3×166304126725³ (a number of 35 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 26273361 + ... + 26279689.

It is an arithmetic number, because the mean of its divisors is an integer number (2543140800).

Almost surely, 2^166304126725 is an apocalyptic number.

It is an amenable number.

166304126725 is a deficient number, since it is larger than the sum of its proper divisors (77837390075).

166304126725 is a wasteful number, since it uses less digits than its factorization.

166304126725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6523 (or 6518 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 43.

The spelling of 166304126725 in words is "one hundred sixty-six billion, three hundred four million, one hundred twenty-six thousand, seven hundred twenty-five".