166030225 has 12 divisors (see below), whose sum is σ = 206705520. Its totient is φ = 132290000.

The previous prime is 166030219. The next prime is 166030229. The reversal of 166030225 is 522030661.

It is not a de Polignac number, because 166030225 - 2¹³ = 166022033 is a prime.

It is a super-2 number, since 2×166030225² = 55132071227101250, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a self number, because there is not a number n which added to its sum of digits gives 166030225.

It is not an unprimeable number, because it can be changed into a prime (166030229) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6955 + ... + 19504.

It is an arithmetic number, because the mean of its divisors is an integer number (17225460).

Almost surely, 2^166030225 is an apocalyptic number.

It is an amenable number.

166030225 is a deficient number, since it is larger than the sum of its proper divisors (40675295).

166030225 is a wasteful number, since it uses less digits than its factorization.

166030225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26720 (or 26715 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 166030225 is about 12885.2716308194. The cubic root of 166030225 is about 549.6198199108.

Adding to 166030225 its reverse (522030661), we get a palindrome (688060886).

The spelling of 166030225 in words is "one hundred sixty-six million, thirty thousand, two hundred twenty-five".