6225409 has 2 divisors, whose sum is σ = 6225410. Its totient is φ = 6225408.

The previous prime is 6225391. The next prime is 6225449. The reversal of 6225409 is 9045226.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5303809 + 921600 = 2303^2 + 960^2 .

It is a cyclic number.

It is not a de Polignac number, because 6225409 - 2⁵ = 6225377 is a prime.

6225409 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (6225449) 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 as a sum of consecutive naturals, namely, 3112704 + 3112705.

It is an arithmetic number, because the mean of its divisors is an integer number (3112705).

Almost surely, 2^6225409 is an apocalyptic number.

It is an amenable number.

6225409 is a deficient number, since it is larger than the sum of its proper divisors (1).

6225409 is an equidigital number, since it uses as much as digits as its factorization.

6225409 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 6225409 is about 2495.0769527211. The cubic root of 6225409 is about 183.9596733458.

The spelling of 6225409 in words is "six million, two hundred twenty-five thousand, four hundred nine".