22561543250 has 64 divisors (see below), whose sum is σ = 43741283040. Its totient is φ = 8703520000.

The previous prime is 22561543241. The next prime is 22561543259. The reversal of 22561543250 is 5234516522.

It is an interprime number because it is at equal distance from previous prime (22561543241) and next prime (22561543259).

It can be written as a sum of positive squares in 16 ways, for example, as 10529427769 + 12032115481 = 102613^2 + 109691^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 22561543250.

It is not an unprimeable number, because it can be changed into a prime (22561543259) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11867300 + ... + 11869200.

Almost surely, 2^22561543250 is an apocalyptic number.

22561543250 is a deficient number, since it is larger than the sum of its proper divisors (21179739790).

22561543250 is a wasteful number, since it uses less digits than its factorization.

22561543250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3584 (or 3574 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 35.

The spelling of 22561543250 in words is "twenty-two billion, five hundred sixty-one million, five hundred forty-three thousand, two hundred fifty".