22531242541 has 4 divisors (see below), whose sum is σ = 23080785084. Its totient is φ = 21981700000.

The previous prime is 22531242529. The next prime is 22531242647. The reversal of 22531242541 is 14524213522.

It is a happy number.

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 9851356516 + 12679886025 = 99254^2 + 112605^2 .

It is a cyclic number.

It is not a de Polignac number, because 22531242541 - 2²¹ = 22529145389 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22531242521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 274771210 + ... + 274771291.

It is an arithmetic number, because the mean of its divisors is an integer number (5770196271).

Almost surely, 2^22531242541 is an apocalyptic number.

It is an amenable number.

22531242541 is a deficient number, since it is larger than the sum of its proper divisors (549542543).

22531242541 is an equidigital number, since it uses as much as digits as its factorization.

22531242541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 549542542.

The product of its digits is 19200, while the sum is 31.

The spelling of 22531242541 in words is "twenty-two billion, five hundred thirty-one million, two hundred forty-two thousand, five hundred forty-one".