225389332240 has 80 divisors (see below), whose sum is σ = 527429242368. Its totient is φ = 89571496448.

The previous prime is 225389332141. The next prime is 225389332241. The reversal of 225389332240 is 42233983522.

It is a tau number, because it is divible by the number of its divisors (80).

It is not an unprimeable number, because it can be changed into a prime (225389332241) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45595209 + ... + 45600151.

Almost surely, 2^225389332240 is an apocalyptic number.

225389332240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 225389332240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (263714621184).

225389332240 is an abundant number, since it is smaller than the sum of its proper divisors (302039910128).

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

225389332240 is a wasteful number, since it uses less digits than its factorization.

225389332240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8536 (or 8530 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 43.

The spelling of 225389332240 in words is "two hundred twenty-five billion, three hundred eighty-nine million, three hundred thirty-two thousand, two hundred forty".