166225316 has 12 divisors (see below), whose sum is σ = 297989580. Its totient is φ = 81085440.

The previous prime is 166225313. The next prime is 166225321. The reversal of 166225316 is 613522661.

It can be written as a sum of positive squares in 2 ways, for example, as 3407716 + 162817600 = 1846^2 + 12760^2 .

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (166225313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 506621 + ... + 506948.

It is an arithmetic number, because the mean of its divisors is an integer number (24832465).

Almost surely, 2^166225316 is an apocalyptic number.

It is an amenable number.

166225316 is a deficient number, since it is larger than the sum of its proper divisors (131764264).

166225316 is a wasteful number, since it uses less digits than its factorization.

166225316 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1013614 (or 1013612 counting only the distinct ones).

The product of its digits is 12960, while the sum is 32.

The square root of 166225316 is about 12892.8397182312. The cubic root of 166225316 is about 549.8350094638.

Adding to 166225316 its reverse (613522661), we get a palindrome (779747977).

The spelling of 166225316 in words is "one hundred sixty-six million, two hundred twenty-five thousand, three hundred sixteen".