225522520020 has 144 divisors (see below), whose sum is σ = 782205959808. Its totient is φ = 51521990400.

The previous prime is 225522519967. The next prime is 225522520051. The reversal of 225522520020 is 20025225522.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2509870 + ... + 2598170.

It is an arithmetic number, because the mean of its divisors is an integer number (5431985832).

Almost surely, 2^225522520020 is an apocalyptic number.

225522520020 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 225522520020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (391102979904).

225522520020 is an abundant number, since it is smaller than the sum of its proper divisors (556683439788).

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

225522520020 is a wasteful number, since it uses less digits than its factorization.

225522520020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90350 (or 90345 counting only the distinct ones).

The product of its (nonzero) digits is 8000, while the sum is 27.

Adding to 225522520020 its reverse (20025225522), we get a palindrome (245547745542).

The spelling of 225522520020 in words is "two hundred twenty-five billion, five hundred twenty-two million, five hundred twenty thousand, twenty".