6224725661 has 32 divisors (see below), whose sum is σ = 8276567040. Its totient is φ = 4532140800.

The previous prime is 6224725649. The next prime is 6224725667. The reversal of 6224725661 is 1665274226.

It is not a de Polignac number, because 6224725661 - 2¹⁴ = 6224709277 is a prime.

It is a Smith number, since the sum of its digits (41) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6224725667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 164846 + ... + 199056.

It is an arithmetic number, because the mean of its divisors is an integer number (258642720).

Almost surely, 2^6224725661 is an apocalyptic number.

It is an amenable number.

6224725661 is a deficient number, since it is larger than the sum of its proper divisors (2051841379).

6224725661 is a wasteful number, since it uses less digits than its factorization.

6224725661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34385.

The product of its digits is 241920, while the sum is 41.

The square root of 6224725661 is about 78896.9306183707. The cubic root of 6224725661 is about 1839.5294225286.

Adding to 6224725661 its reverse (1665274226), we get a palindrome (7889999887).

The spelling of 6224725661 in words is "six billion, two hundred twenty-four million, seven hundred twenty-five thousand, six hundred sixty-one".