166705573243925 has 48 divisors (see below), whose sum is σ = 210891576093120. Its totient is φ = 130684491893760.

The previous prime is 166705573243919. The next prime is 166705573243933. The reversal of 166705573243925 is 529342375507661.

It is not a de Polignac number, because 166705573243925 - 2¹⁸ = 166705572981781 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2260163147 + ... + 2260236903.

It is an arithmetic number, because the mean of its divisors is an integer number (4393574501940).

Almost surely, 2^{166705573243925} is an apocalyptic number.

It is an amenable number.

166705573243925 is a deficient number, since it is larger than the sum of its proper divisors (44186002849195).

166705573243925 is a wasteful number, since it uses less digits than its factorization.

166705573243925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78710 (or 78705 counting only the distinct ones).

The product of its (nonzero) digits is 285768000, while the sum is 65.

The spelling of 166705573243925 in words is "one hundred sixty-six trillion, seven hundred five billion, five hundred seventy-three million, two hundred forty-three thousand, nine hundred twenty-five".