6221331225 has 24 divisors (see below), whose sum is σ = 11428817120. Its totient is φ = 3318042960.

The previous prime is 6221331217. The next prime is 6221331247. The reversal of 6221331225 is 5221331226.

It is a happy number.

6221331225 is a `hidden beast` number, since 622 + 1 + 3 + 3 + 12 + 25 = 666.

It is not a de Polignac number, because 6221331225 - 2³ = 6221331217 is a prime.

It is a super-2 number, since 2×6221331225² = 77409924422320001250, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4607719 + ... + 4609068.

Almost surely, 2^6221331225 is an apocalyptic number.

It is an amenable number.

6221331225 is a deficient number, since it is larger than the sum of its proper divisors (5207485895).

6221331225 is a wasteful number, since it uses less digits than its factorization.

6221331225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9216806 (or 9216795 counting only the distinct ones).

The product of its digits is 4320, while the sum is 27.

The square root of 6221331225 is about 78875.4158467643. The cubic root of 6221331225 is about 1839.1949874283.

Subtracting from 6221331225 its reverse (5221331226), we obtain a palindrome (999999999).

The spelling of 6221331225 in words is "six billion, two hundred twenty-one million, three hundred thirty-one thousand, two hundred twenty-five".