1722250000 has 105 divisors (see below), whose sum is σ = 4221879553. Its totient is φ = 680600000.

The previous prime is 1722249973. The next prime is 1722250001. The reversal of 1722250000 is 522271.

The square root of 1722250000 is 41500.

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

It can be written as a sum of positive squares in 3 ways, for example, as 1508856336 + 213393664 = 38844^2 + 14608^2 .

It is a super-2 number, since 2×1722250000² = 5932290125000000000, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1722250000.

It is not an unprimeable number, because it can be changed into a prime (1722250001) by changing a digit.

It is a polite number, since it can be written in 20 ways as a sum of consecutive naturals, for example, 20749959 + ... + 20750041.

Almost surely, 2^1722250000 is an apocalyptic number.

1722250000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1722250000 is the 41500-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1722250000

1722250000 is an abundant number, since it is smaller than the sum of its proper divisors (2499629553).

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

1722250000 is an frugal number, since it uses more digits than its factorization.

1722250000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 204 (or 90 counting only the distinct ones).

The product of its (nonzero) digits is 280, while the sum is 19.

The cubic root of 1722250000 is about 1198.6675024043.

Adding to 1722250000 its reverse (522271), we get a palindrome (1722772271).

The spelling of 1722250000 in words is "one billion, seven hundred twenty-two million, two hundred fifty thousand".