6221225 has 12 divisors (see below), whose sum is σ = 7981260. Its totient is φ = 4804800.

The previous prime is 6221213. The next prime is 6221231. The reversal of 6221225 is 5221226.

It can be written as a sum of positive squares in 6 ways, for example, as 1507984 + 4713241 = 1228^2 + 2171^2 .

It is not a de Polignac number, because 6221225 - 2⁴ = 6221209 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 6221197 and 6221206.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3566 + ... + 5015.

It is an arithmetic number, because the mean of its divisors is an integer number (665105).

Almost surely, 2^6221225 is an apocalyptic number.

It is an amenable number.

6221225 is a deficient number, since it is larger than the sum of its proper divisors (1760035).

6221225 is a wasteful number, since it uses less digits than its factorization.

6221225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8620 (or 8615 counting only the distinct ones).

The product of its digits is 480, while the sum is 20.

The square root of 6221225 is about 2494.2383607025. The cubic root of 6221225 is about 183.9184519701.

Subtracting from 6221225 its reverse (5221226), we obtain a palindrome (999999).

It can be divided in two parts, 6221 and 225, that added together give a palindrome (6446).

The spelling of 6221225 in words is "six million, two hundred twenty-one thousand, two hundred twenty-five".