166275351625 has 16 divisors (see below), whose sum is σ = 207577738368. Its totient is φ = 132977910000.

The previous prime is 166275351611. The next prime is 166275351637. The reversal of 166275351625 is 526153572661.

It is not a de Polignac number, because 166275351625 - 2⁷ = 166275351497 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 185100 + ... + 605650.

It is an arithmetic number, because the mean of its divisors is an integer number (12973608648).

Almost surely, 2^166275351625 is an apocalyptic number.

It is an amenable number.

166275351625 is a deficient number, since it is larger than the sum of its proper divisors (41302386743).

166275351625 is an equidigital number, since it uses as much as digits as its factorization.

166275351625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 423729 (or 423719 counting only the distinct ones).

The product of its digits is 2268000, while the sum is 49.

The spelling of 166275351625 in words is "one hundred sixty-six billion, two hundred seventy-five million, three hundred fifty-one thousand, six hundred twenty-five".