22243502500 has 30 divisors (see below), whose sum is σ = 48642096734. Its totient is φ = 8897400000.

The previous prime is 22243502467. The next prime is 22243502537. The reversal of 22243502500 is 520534222.

It is a happy number.

It can be written as a sum of positive squares in 5 ways, for example, as 13436055396 + 8807447104 = 115914^2 + 93848^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 4446201 + ... + 4451200.

Almost surely, 2^22243502500 is an apocalyptic number.

22243502500 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22243502500 is an abundant number, since it is smaller than the sum of its proper divisors (26398594234).

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

22243502500 is an equidigital number, since it uses as much as digits as its factorization.

22243502500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8897425 (or 8897408 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 25.

The spelling of 22243502500 in words is "twenty-two billion, two hundred forty-three million, five hundred two thousand, five hundred".