4442222500 has 135 divisors (see below), whose sum is σ = 10276587783. Its totient is φ = 1679580000.

The previous prime is 4442222489. The next prime is 4442222509. The reversal of 4442222500 is 52222444.

The square root of 4442222500 is 66650.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 2 ways, for example, as 348270244 + 4093952256 = 18662^2 + 63984^2 .

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4442222509) by changing a digit.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 103307479 + ... + 103307521.

Almost surely, 2^4442222500 is an apocalyptic number.

4442222500 is the 66650-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4442222500

4442222500 is an abundant number, since it is smaller than the sum of its proper divisors (5834365283).

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

4442222500 is an equidigital number, since it uses as much as digits as its factorization.

4442222500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172 (or 81 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 25.

The cubic root of 4442222500 is about 1643.8673479042.

Multiplying 4442222500 by its sum of digits (25), we get a square (111055562500 = 333250²).

4442222500 divided by its sum of digits (25) gives a square (177688900 = 13330²).

Adding to 4442222500 its reverse (52222444), we get a palindrome (4494444944).

The spelling of 4442222500 in words is "four billion, four hundred forty-two million, two hundred twenty-two thousand, five hundred".