225320817 has 8 divisors (see below), whose sum is σ = 307414624. Its totient is φ = 146720448.

The previous prime is 225320801. The next prime is 225320819. The reversal of 225320817 is 718023522.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 225320817 - 2⁴ = 225320801 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (225320819) 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 in 7 ways as a sum of consecutive naturals, for example, 873208 + ... + 873465.

It is an arithmetic number, because the mean of its divisors is an integer number (38426828).

Almost surely, 2^225320817 is an apocalyptic number.

It is an amenable number.

225320817 is a deficient number, since it is larger than the sum of its proper divisors (82093807).

225320817 is a wasteful number, since it uses less digits than its factorization.

225320817 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1746719.

The product of its (nonzero) digits is 6720, while the sum is 30.

The square root of 225320817 is about 15010.6900907320. The cubic root of 225320817 is about 608.5091398716.

The spelling of 225320817 in words is "two hundred twenty-five million, three hundred twenty thousand, eight hundred seventeen".