225441001 has 4 divisors (see below), whose sum is σ = 230939604. Its totient is φ = 219942400.

The previous prime is 225440977. The next prime is 225441019. The reversal of 225441001 is 100144522.

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 131331600 + 94109401 = 11460^2 + 9701^2 .

It is a cyclic number.

It is not a de Polignac number, because 225441001 - 2⁹ = 225440489 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 225441001.

It is not an unprimeable number, because it can be changed into a prime (225441071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2749240 + ... + 2749321.

It is an arithmetic number, because the mean of its divisors is an integer number (57734901).

Almost surely, 2^225441001 is an apocalyptic number.

It is an amenable number.

225441001 is a deficient number, since it is larger than the sum of its proper divisors (5498603).

225441001 is an equidigital number, since it uses as much as digits as its factorization.

225441001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5498602.

The product of its (nonzero) digits is 320, while the sum is 19.

The square root of 225441001 is about 15014.6928373510. The cubic root of 225441001 is about 608.6173116545.

Adding to 225441001 its reverse (100144522), we get a palindrome (325585523).

The spelling of 225441001 in words is "two hundred twenty-five million, four hundred forty-one thousand, one".