22499999993 has 2 divisors, whose sum is σ = 22499999994. Its totient is φ = 22499999992.

The previous prime is 22499999989. The next prime is 22500000007. The reversal of 22499999993 is 39999999422.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18450332224 + 4049667769 = 135832^2 + 63637^2 .

It is a cyclic number.

It is not a de Polignac number, because 22499999993 - 2² = 22499999989 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22499999993.

It is not a weakly prime, because it can be changed into another prime (22499999983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11249999996 + 11249999997.

It is an arithmetic number, because the mean of its divisors is an integer number (11249999997).

Almost surely, 2^22499999993 is an apocalyptic number.

It is an amenable number.

22499999993 is a deficient number, since it is larger than the sum of its proper divisors (1).

22499999993 is an equidigital number, since it uses as much as digits as its factorization.

22499999993 is an evil number, because the sum of its binary digits is even.

The product of its digits is 229582512, while the sum is 74.

The spelling of 22499999993 in words is "twenty-two billion, four hundred ninety-nine million, nine hundred ninety-nine thousand, nine hundred ninety-three".