225220075 has 6 divisors (see below), whose sum is σ = 279272924. Its totient is φ = 180176040.

The previous prime is 225220069. The next prime is 225220087. The reversal of 225220075 is 570022522.

It is not a de Polignac number, because 225220075 - 2⁹ = 225219563 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25), and also a Moran number because the ratio is a prime number: 9008803 = 225220075 / (2 + 2 + 5 + 2 + 2 + 0 + 0 + 7 + 5).

It is a Duffinian number.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 4504377 + ... + 4504426.

Almost surely, 2^225220075 is an apocalyptic number.

225220075 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

225220075 is a deficient number, since it is larger than the sum of its proper divisors (54052849).

225220075 is an equidigital number, since it uses as much as digits as its factorization.

225220075 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9008813 (or 9008808 counting only the distinct ones).

The product of its (nonzero) digits is 2800, while the sum is 25.

The square root of 225220075 is about 15007.3340403950. The cubic root of 225220075 is about 608.4184372503.

Adding to 225220075 its reverse (570022522), we get a palindrome (795242597).

The spelling of 225220075 in words is "two hundred twenty-five million, two hundred twenty thousand, seventy-five".