166187525 has 12 divisors (see below), whose sum is σ = 235511712. Its totient is φ = 113957040.

The previous prime is 166187491. The next prime is 166187531. The reversal of 166187525 is 525781661.

166187525 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 166187525 - 2¹² = 166183429 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 11 ways as a sum of consecutive naturals, for example, 474647 + ... + 474996.

It is an arithmetic number, because the mean of its divisors is an integer number (19625976).

Almost surely, 2^166187525 is an apocalyptic number.

It is an amenable number.

166187525 is a deficient number, since it is larger than the sum of its proper divisors (69324187).

166187525 is an equidigital number, since it uses as much as digits as its factorization.

166187525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 949660 (or 949655 counting only the distinct ones).

The product of its digits is 100800, while the sum is 41.

The square root of 166187525 is about 12891.3740539944. The cubic root of 166187525 is about 549.7933383349.

The spelling of 166187525 in words is "one hundred sixty-six million, one hundred eighty-seven thousand, five hundred twenty-five".