225622609 has 2 divisors, whose sum is σ = 225622610. Its totient is φ = 225622608.

The previous prime is 225622583. The next prime is 225622627. The reversal of 225622609 is 906226522.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 166332609 + 59290000 = 12897^2 + 7700^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-225622609 is a prime.

It is not a weakly prime, because it can be changed into another prime (225622699) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112811304 + 112811305.

It is an arithmetic number, because the mean of its divisors is an integer number (112811305).

Almost surely, 2^225622609 is an apocalyptic number.

It is an amenable number.

225622609 is a deficient number, since it is larger than the sum of its proper divisors (1).

225622609 is an equidigital number, since it uses as much as digits as its factorization.

225622609 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 25920, while the sum is 34.

The square root of 225622609 is about 15020.7392960533. The cubic root of 225622609 is about 608.7806952830.

The spelling of 225622609 in words is "two hundred twenty-five million, six hundred twenty-two thousand, six hundred nine".