221625613000 has 128 divisors (see below), whose sum is σ = 571354093440. Its totient is φ = 79792800000.

The previous prime is 221625612983. The next prime is 221625613103. The reversal of 221625613000 is 316526122.

It is a self number, because there is not a number n which added to its sum of digits gives 221625613000.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1011259 + ... + 1210741.

It is an arithmetic number, because the mean of its divisors is an integer number (4463703855).

Almost surely, 2^221625613000 is an apocalyptic number.

221625613000 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 221625613000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (285677046720).

221625613000 is an abundant number, since it is smaller than the sum of its proper divisors (349728480440).

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

221625613000 is a wasteful number, since it uses less digits than its factorization.

221625613000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 199616 (or 199602 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 28.

The spelling of 221625613000 in words is "two hundred twenty-one billion, six hundred twenty-five million, six hundred thirteen thousand".