225056472520 has 128 divisors (see below), whose sum is σ = 559203004800. Its totient is φ = 80837222400.

The previous prime is 225056472467. The next prime is 225056472547. The reversal of 225056472520 is 25274650522.

It is a happy number.

225056472520 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15867672 + ... + 15881848.

It is an arithmetic number, because the mean of its divisors is an integer number (4368773475).

Almost surely, 2^225056472520 is an apocalyptic number.

225056472520 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 225056472520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (279601502400).

225056472520 is an abundant number, since it is smaller than the sum of its proper divisors (334146532280).

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

225056472520 is a wasteful number, since it uses less digits than its factorization.

225056472520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14639 (or 14635 counting only the distinct ones).

The product of its (nonzero) digits is 336000, while the sum is 40.

The spelling of 225056472520 in words is "two hundred twenty-five billion, fifty-six million, four hundred seventy-two thousand, five hundred twenty".