22505909908 has 6 divisors (see below), whose sum is σ = 39385342346. Its totient is φ = 11252954952.

The previous prime is 22505909869. The next prime is 22505909917. The reversal of 22505909908 is 80990950522.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 15260155024 + 7245754884 = 123532^2 + 85122^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2813238735 + ... + 2813238742.

Almost surely, 2^22505909908 is an apocalyptic number.

It is an amenable number.

22505909908 is a deficient number, since it is larger than the sum of its proper divisors (16879432438).

22505909908 is a wasteful number, since it uses less digits than its factorization.

22505909908 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5626477481 (or 5626477479 counting only the distinct ones).

The product of its (nonzero) digits is 583200, while the sum is 49.

The spelling of 22505909908 in words is "twenty-two billion, five hundred five million, nine hundred nine thousand, nine hundred eight".