225520573 has 2 divisors, whose sum is σ = 225520574. Its totient is φ = 225520572.

The previous prime is 225520511. The next prime is 225520601. The reversal of 225520573 is 375025522.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 145274809 + 80245764 = 12053^2 + 8958^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-225520573 is a prime.

It is equal to p_12409771 and since 225520573 and 12409771 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (225520073) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112760286 + 112760287.

It is an arithmetic number, because the mean of its divisors is an integer number (112760287).

Almost surely, 2^225520573 is an apocalyptic number.

It is an amenable number.

225520573 is a deficient number, since it is larger than the sum of its proper divisors (1).

225520573 is an equidigital number, since it uses as much as digits as its factorization.

225520573 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 21000, while the sum is 31.

The square root of 225520573 is about 15017.3424080295. The cubic root of 225520573 is about 608.6889093967.

The spelling of 225520573 in words is "two hundred twenty-five million, five hundred twenty thousand, five hundred seventy-three".