225781540000 has 60 divisors (see below), whose sum is σ = 555456504834. Its totient is φ = 90312608000.

The previous prime is 225781539961. The next prime is 225781540013. The reversal of 225781540000 is 45187522.

It is a happy number.

It can be written as a sum of positive squares in 5 ways, for example, as 12215554576 + 213565985424 = 110524^2 + 462132^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 5624539 + ... + 5664538.

Almost surely, 2^225781540000 is an apocalyptic number.

225781540000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

225781540000 is an abundant number, since it is smaller than the sum of its proper divisors (329674964834).

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

225781540000 is an equidigital number, since it uses as much as digits as its factorization.

225781540000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11289107 (or 11289084 counting only the distinct ones).

The product of its (nonzero) digits is 22400, while the sum is 34.

The spelling of 225781540000 in words is "two hundred twenty-five billion, seven hundred eighty-one million, five hundred forty thousand".