1225152166 has 8 divisors (see below), whose sum is σ = 2100260880. Its totient is φ = 525065208.

The previous prime is 1225152163. The next prime is 1225152197. The reversal of 1225152166 is 6612515221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1225152163) 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, 43755421 + ... + 43755448.

It is an arithmetic number, because the mean of its divisors is an integer number (262532610).

Almost surely, 2^1225152166 is an apocalyptic number.

1225152166 is a deficient number, since it is larger than the sum of its proper divisors (875108714).

1225152166 is an equidigital number, since it uses as much as digits as its factorization.

1225152166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87510878.

The product of its digits is 7200, while the sum is 31.

The square root of 1225152166 is about 35002.1737324984. The cubic root of 1225152166 is about 1070.0317823267.

Adding to 1225152166 its reverse (6612515221), we get a palindrome (7837667387).

The spelling of 1225152166 in words is "one billion, two hundred twenty-five million, one hundred fifty-two thousand, one hundred sixty-six".