22025000000 has 126 divisors (see below), whose sum is σ = 54694307934. Its totient is φ = 8800000000.

The previous prime is 22024999999. The next prime is 22025000009. The reversal of 22025000000 is 52022.

It can be written as a sum of positive squares in 9 ways, for example, as 3892761664 + 18132238336 = 62392^2 + 134656^2 .

It is a sliding number, since 22025000000 = 6400000000 + 15625000000 and 1/6400000000 + 1/15625000000 = 0.00000000022025000000.

It is not an unprimeable number, because it can be changed into a prime (22025000009) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 24999560 + ... + 25000440.

It is an arithmetic number, because the mean of its divisors is an integer number (434081809).

Almost surely, 2^22025000000 is an apocalyptic number.

22025000000 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 22025000000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27347153967).

22025000000 is an abundant number, since it is smaller than the sum of its proper divisors (32669307934).

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

22025000000 is an frugal number, since it uses more digits than its factorization.

22025000000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 933 (or 888 counting only the distinct ones).

The product of its (nonzero) digits is 40, while the sum is 11.

Adding to 22025000000 its reverse (52022), we get a palindrome (22025052022).

The spelling of 22025000000 in words is "twenty-two billion, twenty-five million", and thus it is an aban number and an uban number.