22125344321545 has 16 divisors (see below), whose sum is σ = 26561719275408. Its totient is φ = 17692738744320.

The previous prime is 22125344321503. The next prime is 22125344321627. The reversal of 22125344321545 is 54512344352122.

It can be written as a sum of positive squares in 8 ways, for example, as 4690009603449 + 17435334718096 = 2165643^2 + 4175564^2 .

It is not a de Polignac number, because 22125344321545 - 2¹¹ = 22125344319497 is a prime.

It is a super-2 number, since 2×22125344321545² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 473945605 + ... + 473992285.

It is an arithmetic number, because the mean of its divisors is an integer number (1660107454713).

Almost surely, 2^{22125344321545} is an apocalyptic number.

It is an amenable number.

22125344321545 is a deficient number, since it is larger than the sum of its proper divisors (4436374953863).

22125344321545 is a wasteful number, since it uses less digits than its factorization.

22125344321545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85020.

The product of its digits is 1152000, while the sum is 43.

Adding to 22125344321545 its reverse (54512344352122), we get a palindrome (76637688673667).

The spelling of 22125344321545 in words is "twenty-two trillion, one hundred twenty-five billion, three hundred forty-four million, three hundred twenty-one thousand, five hundred forty-five".