225326637220 has 12 divisors (see below), whose sum is σ = 473185938204. Its totient is φ = 90130654880.

The previous prime is 225326637197. The next prime is 225326637223. The reversal of 225326637220 is 22736623522.

It can be written as a sum of positive squares in 2 ways, for example, as 45396268096 + 179930369124 = 213064^2 + 424182^2 .

It is not an unprimeable number, because it can be changed into a prime (225326637223) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5633165911 + ... + 5633165950.

It is an arithmetic number, because the mean of its divisors is an integer number (39432161517).

Almost surely, 2^225326637220 is an apocalyptic number.

225326637220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

225326637220 is an abundant number, since it is smaller than the sum of its proper divisors (247859300984).

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

225326637220 is a wasteful number, since it uses less digits than its factorization.

225326637220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11266331870 (or 11266331868 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 40.

The spelling of 225326637220 in words is "two hundred twenty-five billion, three hundred twenty-six million, six hundred thirty-seven thousand, two hundred twenty".