225605020 has 24 divisors (see below), whose sum is σ = 478374624. Its totient is φ = 89365056.

The previous prime is 225604997. The next prime is 225605027. The reversal of 225605020 is 20506522.

It is a junction number, because it is equal to n+sod(n) for n = 225604982 and 225605000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225605027) 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, 52699 + ... + 56818.

It is an arithmetic number, because the mean of its divisors is an integer number (19932276).

Almost surely, 2^225605020 is an apocalyptic number.

225605020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

225605020 is an abundant number, since it is smaller than the sum of its proper divisors (252769604).

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

225605020 is a wasteful number, since it uses less digits than its factorization.

225605020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109629 (or 109627 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 225605020 is about 15020.1537941527. The cubic root of 225605020 is about 608.7648751753.

The spelling of 225605020 in words is "two hundred twenty-five million, six hundred five thousand, twenty".