225543401 has 4 divisors (see below), whose sum is σ = 226803600. Its totient is φ = 224283204.

The previous prime is 225543397. The next prime is 225543427. The reversal of 225543401 is 104345522.

It is a happy number.

225543401 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 225543401 - 2² = 225543397 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (225543431) 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, 629831 + ... + 630188.

It is an arithmetic number, because the mean of its divisors is an integer number (56700900).

Almost surely, 2^225543401 is an apocalyptic number.

It is an amenable number.

225543401 is a deficient number, since it is larger than the sum of its proper divisors (1260199).

225543401 is a wasteful number, since it uses less digits than its factorization.

225543401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1260198.

The product of its (nonzero) digits is 4800, while the sum is 26.

The square root of 225543401 is about 15018.1024433848. The cubic root of 225543401 is about 608.7094465941.

Adding to 225543401 its reverse (104345522), we get a palindrome (329888923).

The spelling of 225543401 in words is "two hundred twenty-five million, five hundred forty-three thousand, four hundred one".