22555665526 has 4 divisors (see below), whose sum is σ = 33833498292. Its totient is φ = 11277832762.

The previous prime is 22555665511. The next prime is 22555665527. The reversal of 22555665526 is 62556655522.

It is a semiprime because it is the product of two primes.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 22555665526.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22555665527) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5638916380 + ... + 5638916383.

It is an arithmetic number, because the mean of its divisors is an integer number (8458374573).

Almost surely, 2^22555665526 is an apocalyptic number.

22555665526 is a deficient number, since it is larger than the sum of its proper divisors (11277832766).

22555665526 is a wasteful number, since it uses less digits than its factorization.

22555665526 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11277832765.

The product of its digits is 5400000, while the sum is 49.

The spelling of 22555665526 in words is "twenty-two billion, five hundred fifty-five million, six hundred sixty-five thousand, five hundred twenty-six".