225601404 has 24 divisors (see below), whose sum is σ = 601603968. Its totient is φ = 64457520.

The previous prime is 225601379. The next prime is 225601417. The reversal of 225601404 is 404106522.

It is a congruent number.

It is an unprimeable number.

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, 1342782 + ... + 1342949.

It is an arithmetic number, because the mean of its divisors is an integer number (25066832).

Almost surely, 2^225601404 is an apocalyptic number.

It is an amenable number.

225601404 is an abundant number, since it is smaller than the sum of its proper divisors (376002564).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

225601404 is a wasteful number, since it uses less digits than its factorization.

225601404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2685745 (or 2685743 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 24.

The square root of 225601404 is about 15020.0334220667. The cubic root of 225601404 is about 608.7616227277.

Adding to 225601404 its reverse (404106522), we get a palindrome (629707926).

The spelling of 225601404 in words is "two hundred twenty-five million, six hundred one thousand, four hundred four".