22499999998 has 8 divisors (see below), whose sum is σ = 38571428592. Its totient is φ = 9642857136.

The previous prime is 22499999993. The next prime is 22500000007. The reversal of 22499999998 is 89999999422.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22499999993) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 803571415 + ... + 803571442.

It is an arithmetic number, because the mean of its divisors is an integer number (4821428574).

Almost surely, 2^22499999998 is an apocalyptic number.

22499999998 is a deficient number, since it is larger than the sum of its proper divisors (16071428594).

22499999998 is a wasteful number, since it uses less digits than its factorization.

22499999998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1607142866.

The product of its digits is 612220032, while the sum is 79.

It can be divided in two parts, 2 and 2499999998, that added together give a square (2500000000 = 50000²).

The spelling of 22499999998 in words is "twenty-two billion, four hundred ninety-nine million, nine hundred ninety-nine thousand, nine hundred ninety-eight".