220617225552 has 80 divisors (see below), whose sum is σ = 603863225280. Its totient is φ = 69166196736.

The previous prime is 220617225541. The next prime is 220617225571. The reversal of 220617225552 is 255522716022.

It is a self number, because there is not a number n which added to its sum of digits gives 220617225552.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1118974 + ... + 1301282.

It is an arithmetic number, because the mean of its divisors is an integer number (7548290316).

Almost surely, 2^220617225552 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 220617225552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (301931612640).

220617225552 is an abundant number, since it is smaller than the sum of its proper divisors (383245999728).

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

220617225552 is a wasteful number, since it uses less digits than its factorization.

220617225552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 183820 (or 183814 counting only the distinct ones).

The product of its (nonzero) digits is 168000, while the sum is 39.

The spelling of 220617225552 in words is "two hundred twenty billion, six hundred seventeen million, two hundred twenty-five thousand, five hundred fifty-two".