225636481 has 8 divisors (see below), whose sum is σ = 259312320. Its totient is φ = 192321168.

The previous prime is 225636451. The next prime is 225636517. The reversal of 225636481 is 184636522.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-225636481 is a prime.

It is a super-2 number, since 2×225636481² = 101823643116126722, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 225636481.

It is not an unprimeable number, because it can be changed into a prime (225636401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 88786 + ... + 91291.

It is an arithmetic number, because the mean of its divisors is an integer number (32414040).

Almost surely, 2^225636481 is an apocalyptic number.

It is an amenable number.

225636481 is a deficient number, since it is larger than the sum of its proper divisors (33675839).

225636481 is a wasteful number, since it uses less digits than its factorization.

225636481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180263.

The product of its digits is 69120, while the sum is 37.

The square root of 225636481 is about 15021.2010505152. The cubic root of 225636481 is about 608.7931716224.

The spelling of 225636481 in words is "two hundred twenty-five million, six hundred thirty-six thousand, four hundred eighty-one".