22565136541 has 4 divisors (see below), whose sum is σ = 23892497532. Its totient is φ = 21237775552.

The previous prime is 22565136527. The next prime is 22565136563. The reversal of 22565136541 is 14563156522.

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

It can be written as a sum of positive squares in 2 ways, for example, as 10126195641 + 12438940900 = 100629^2 + 111530^2 .

It is a cyclic number.

It is not a de Polignac number, because 22565136541 - 2⁷ = 22565136413 is a prime.

It is a super-2 number, since 2×22565136541² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22565136494 and 22565136503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22565136511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 663680470 + ... + 663680503.

It is an arithmetic number, because the mean of its divisors is an integer number (5973124383).

Almost surely, 2^22565136541 is an apocalyptic number.

It is an amenable number.

22565136541 is a deficient number, since it is larger than the sum of its proper divisors (1327360991).

22565136541 is a wasteful number, since it uses less digits than its factorization.

22565136541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1327360990.

The product of its digits is 216000, while the sum is 40.

The spelling of 22565136541 in words is "twenty-two billion, five hundred sixty-five million, one hundred thirty-six thousand, five hundred forty-one".