225122017 has 4 divisors (see below), whose sum is σ = 225362196. Its totient is φ = 224881840.

The previous prime is 225121991. The next prime is 225122039. The reversal of 225122017 is 710221522.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 122788561 + 102333456 = 11081^2 + 10116^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-225122017 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (225122087) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 118678 + ... + 120559.

It is an arithmetic number, because the mean of its divisors is an integer number (56340549).

Almost surely, 2^225122017 is an apocalyptic number.

It is an amenable number.

225122017 is a deficient number, since it is larger than the sum of its proper divisors (240179).

225122017 is an equidigital number, since it uses as much as digits as its factorization.

225122017 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 240178.

The product of its (nonzero) digits is 560, while the sum is 22.

The square root of 225122017 is about 15004.0666820699. The cubic root of 225122017 is about 608.3301251765.

Adding to 225122017 its reverse (710221522), we get a palindrome (935343539).

The spelling of 225122017 in words is "two hundred twenty-five million, one hundred twenty-two thousand, seventeen".