225472020 has 72 divisors (see below), whose sum is σ = 670694304. Its totient is φ = 56584704.

The previous prime is 225472007. The next prime is 225472033. The reversal of 225472020 is 20274522.

It is an interprime number because it is at equal distance from previous prime (225472007) and next prime (225472033).

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 10839 + ... + 23841.

Almost surely, 2^225472020 is an apocalyptic number.

225472020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 225472020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (335347152).

225472020 is an abundant number, since it is smaller than the sum of its proper divisors (445222284).

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

225472020 is a wasteful number, since it uses less digits than its factorization.

225472020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13049 (or 13030 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 24.

The square root of 225472020 is about 15015.7257566859. The cubic root of 225472020 is about 608.6452241084.

The spelling of 225472020 in words is "two hundred twenty-five million, four hundred seventy-two thousand, twenty".