9225421 has 2 divisors, whose sum is σ = 9225422. Its totient is φ = 9225420.

The previous prime is 9225397. The next prime is 9225439. The reversal of 9225421 is 1245229.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9180900 + 44521 = 3030^2 + 211^2 .

It is a cyclic number.

It is not a de Polignac number, because 9225421 - 2¹¹ = 9223373 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9225221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4612710 + 4612711.

It is an arithmetic number, because the mean of its divisors is an integer number (4612711).

Almost surely, 2^9225421 is an apocalyptic number.

It is an amenable number.

9225421 is a deficient number, since it is larger than the sum of its proper divisors (1).

9225421 is an equidigital number, since it uses as much as digits as its factorization.

9225421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1440, while the sum is 25.

The square root of 9225421 is about 3037.3378146001. The cubic root of 9225421 is about 209.7307281929.

The spelling of 9225421 in words is "nine million, two hundred twenty-five thousand, four hundred twenty-one".