225403636 has 6 divisors (see below), whose sum is σ = 394456370. Its totient is φ = 112701816.

The previous prime is 225403627. The next prime is 225403637. The reversal of 225403636 is 636304522.

It is a happy number.

225403636 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 118156900 + 107246736 = 10870^2 + 10356^2 .

It is a junction number, because it is equal to n+sod(n) for n = 225403598 and 225403607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225403637) 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 as a sum of consecutive naturals, namely, 28175451 + ... + 28175458.

Almost surely, 2^225403636 is an apocalyptic number.

It is an amenable number.

225403636 is a deficient number, since it is larger than the sum of its proper divisors (169052734).

225403636 is a wasteful number, since it uses less digits than its factorization.

225403636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56350913 (or 56350911 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 31.

The square root of 225403636 is about 15013.4485045908. The cubic root of 225403636 is about 608.5836853513.

The spelling of 225403636 in words is "two hundred twenty-five million, four hundred three thousand, six hundred thirty-six".