166152382625 has 8 divisors (see below), whose sum is σ = 207358173672. Its totient is φ = 132921906000.

The previous prime is 166152382601. The next prime is 166152382691. The reversal of 166152382625 is 526283251661.

It can be written as a sum of positive squares in 4 ways, for example, as 4561246369 + 161591136256 = 67537^2 + 401984^2 .

It is not a de Polignac number, because 166152382625 - 2³⁰ = 165078640801 is a prime.

It is a super-2 number, since 2×166152382625² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 166152382625.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 664609406 + ... + 664609655.

It is an arithmetic number, because the mean of its divisors is an integer number (25919771709).

Almost surely, 2^166152382625 is an apocalyptic number.

It is an amenable number.

166152382625 is a deficient number, since it is larger than the sum of its proper divisors (41205791047).

166152382625 is an equidigital number, since it uses as much as digits as its factorization.

166152382625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1329219076 (or 1329219066 counting only the distinct ones).

The product of its digits is 1036800, while the sum is 47.

The spelling of 166152382625 in words is "one hundred sixty-six billion, one hundred fifty-two million, three hundred eighty-two thousand, six hundred twenty-five".