225648139328 has 56 divisors (see below), whose sum is σ = 453887128800. Its totient is φ = 111288962048.

The previous prime is 225648139313. The next prime is 225648139331. The reversal of 225648139328 is 823931846522.

It is a self number, because there is not a number n which added to its sum of digits gives 225648139328.

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, 2339351 + ... + 2433897.

It is an arithmetic number, because the mean of its divisors is an integer number (8105127300).

Almost surely, 2^225648139328 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 225648139328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (226943564400).

225648139328 is an abundant number, since it is smaller than the sum of its proper divisors (228238989472).

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

225648139328 is an equidigital number, since it uses as much as digits as its factorization.

225648139328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95067 (or 95057 counting only the distinct ones).

The product of its digits is 4976640, while the sum is 53.

The spelling of 225648139328 in words is "two hundred twenty-five billion, six hundred forty-eight million, one hundred thirty-nine thousand, three hundred twenty-eight".