225440401 has 8 divisors (see below), whose sum is σ = 233144064. Its totient is φ = 217763760.

The previous prime is 225440381. The next prime is 225440431. The reversal of 225440401 is 104044522.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 225440401 - 2²¹ = 223343249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (225440431) 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, 10995 + ... + 23911.

It is an arithmetic number, because the mean of its divisors is an integer number (29143008).

Almost surely, 2^225440401 is an apocalyptic number.

It is an amenable number.

225440401 is a deficient number, since it is larger than the sum of its proper divisors (7703663).

225440401 is a wasteful number, since it uses less digits than its factorization.

225440401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13511.

The product of its (nonzero) digits is 1280, while the sum is 22.

The square root of 225440401 is about 15014.6728569090. The cubic root of 225440401 is about 608.6167717191.

Adding to 225440401 its reverse (104044522), we get a palindrome (329484923).

The spelling of 225440401 in words is "two hundred twenty-five million, four hundred forty thousand, four hundred one".