8225551 has 2 divisors, whose sum is σ = 8225552. Its totient is φ = 8225550.

The previous prime is 8225533. The next prime is 8225573. The reversal of 8225551 is 1555228.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 8225551 - 2⁵ = 8225519 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8225351) 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, 4112775 + 4112776.

It is an arithmetic number, because the mean of its divisors is an integer number (4112776).

Almost surely, 2^8225551 is an apocalyptic number.

8225551 is a deficient number, since it is larger than the sum of its proper divisors (1).

8225551 is an equidigital number, since it uses as much as digits as its factorization.

8225551 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4000, while the sum is 28.

The square root of 8225551 is about 2868.0221407793. The cubic root of 8225551 is about 201.8621989282.

The spelling of 8225551 in words is "eight million, two hundred twenty-five thousand, five hundred fifty-one".