225747550173440 has 72 divisors (see below), whose sum is σ = 549600452387448. Its totient is φ = 88818708234240.

The previous prime is 225747550173371. The next prime is 225747550173449. The reversal of 225747550173440 is 44371055747522.

It can be written as a sum of positive squares in 4 ways, for example, as 12231862718464 + 213515687454976 = 3497408^2 + 14612176^2 .

It is not an unprimeable number, because it can be changed into a prime (225747550173449) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1445538917 + ... + 1445695076.

Almost surely, 2^{225747550173440} is an apocalyptic number.

225747550173440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

225747550173440 is an abundant number, since it is smaller than the sum of its proper divisors (323852902214008).

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

225747550173440 is an equidigital number, since it uses as much as digits as its factorization.

225747550173440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2891234075 (or 2891234061 counting only the distinct ones).

The product of its (nonzero) digits is 32928000, while the sum is 56.

The spelling of 225747550173440 in words is "two hundred twenty-five trillion, seven hundred forty-seven billion, five hundred fifty million, one hundred seventy-three thousand, four hundred forty".