225542401 has 8 divisors (see below), whose sum is σ = 262626624. Its totient is φ = 189674160.

The previous prime is 225542399. The next prime is 225542413. The reversal of 225542401 is 104245522.

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 225542401 - 2¹ = 225542399 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (225542431) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 303595 + ... + 304336.

It is an arithmetic number, because the mean of its divisors is an integer number (32828328).

Almost surely, 2^225542401 is an apocalyptic number.

It is an amenable number.

225542401 is a deficient number, since it is larger than the sum of its proper divisors (37084223).

225542401 is an equidigital number, since it uses as much as digits as its factorization.

225542401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 607991.

The product of its (nonzero) digits is 3200, while the sum is 25.

The square root of 225542401 is about 15018.0691501937. The cubic root of 225542401 is about 608.7085469737.

Adding to 225542401 its reverse (104245522), we get a palindrome (329787923).

The spelling of 225542401 in words is "two hundred twenty-five million, five hundred forty-two thousand, four hundred one".