166207625 has 8 divisors (see below), whose sum is σ = 207427272. Its totient is φ = 132966000.

The previous prime is 166207619. The next prime is 166207633. The reversal of 166207625 is 526702661.

It can be written as a sum of positive squares in 4 ways, for example, as 1008016 + 165199609 = 1004^2 + 12853^2 .

It is not a de Polignac number, because 166207625 - 2⁴ = 166207609 is a prime.

It is a Duffinian number.

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, 664706 + ... + 664955.

It is an arithmetic number, because the mean of its divisors is an integer number (25928409).

Almost surely, 2^166207625 is an apocalyptic number.

It is an amenable number.

166207625 is a deficient number, since it is larger than the sum of its proper divisors (41219647).

166207625 is an equidigital number, since it uses as much as digits as its factorization.

166207625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1329676 (or 1329666 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 35.

The square root of 166207625 is about 12892.1536214862. The cubic root of 166207625 is about 549.8155028558.

The spelling of 166207625 in words is "one hundred sixty-six million, two hundred seven thousand, six hundred twenty-five".