225526220544 has 72 divisors (see below), whose sum is σ = 600375903120. Its totient is φ = 75156963328.

The previous prime is 225526220533. The next prime is 225526220567. The reversal of 225526220544 is 445022625522.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3296962 + ... + 3364670.

It is an arithmetic number, because the mean of its divisors is an integer number (8338554210).

Almost surely, 2^225526220544 is an apocalyptic number.

225526220544 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

225526220544 is an abundant number, since it is smaller than the sum of its proper divisors (374849682576).

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

225526220544 is an equidigital number, since it uses as much as digits as its factorization.

225526220544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72065 (or 72051 counting only the distinct ones).

The product of its (nonzero) digits is 384000, while the sum is 39.

The spelling of 225526220544 in words is "two hundred twenty-five billion, five hundred twenty-six million, two hundred twenty thousand, five hundred forty-four".