166532525 has 6 divisors (see below), whose sum is σ = 206500362. Its totient is φ = 133226000.

The previous prime is 166532503. The next prime is 166532533. The reversal of 166532525 is 525235661.

It can be written as a sum of positive squares in 3 ways, for example, as 26275876 + 140256649 = 5126^2 + 11843^2 .

It is not a de Polignac number, because 166532525 - 2⁸ = 166532269 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3330626 + ... + 3330675.

It is an arithmetic number, because the mean of its divisors is an integer number (34416727).

Almost surely, 2^166532525 is an apocalyptic number.

It is an amenable number.

166532525 is a deficient number, since it is larger than the sum of its proper divisors (39967837).

166532525 is an equidigital number, since it uses as much as digits as its factorization.

166532525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6661311 (or 6661306 counting only the distinct ones).

The product of its digits is 54000, while the sum is 35.

The square root of 166532525 is about 12904.7481571707. The cubic root of 166532525 is about 550.1735265134.

The spelling of 166532525 in words is "one hundred sixty-six million, five hundred thirty-two thousand, five hundred twenty-five".