225322001 has 4 divisors (see below), whose sum is σ = 225630132. Its totient is φ = 225013872.

The previous prime is 225321997. The next prime is 225322037. The reversal of 225322001 is 100223522.

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 194630401 + 30691600 = 13951^2 + 5540^2 .

It is a cyclic number.

It is not a de Polignac number, because 225322001 - 2² = 225321997 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (225322051) 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, 152966 + ... + 154431.

It is an arithmetic number, because the mean of its divisors is an integer number (56407533).

Almost surely, 2^225322001 is an apocalyptic number.

It is an amenable number.

225322001 is a deficient number, since it is larger than the sum of its proper divisors (308131).

225322001 is an equidigital number, since it uses as much as digits as its factorization.

225322001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 308130.

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 225322001 is about 15010.7295292401. The cubic root of 225322001 is about 608.5102057201.

Adding to 225322001 its reverse (100223522), we get a palindrome (325545523).

The spelling of 225322001 in words is "two hundred twenty-five million, three hundred twenty-two thousand, one".