23325021145 has 4 divisors (see below), whose sum is σ = 27990025380. Its totient is φ = 18660016912.

The previous prime is 23325021143. The next prime is 23325021151. The reversal of 23325021145 is 54112052332.

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 5070579264 + 18254441881 = 71208^2 + 135109^2 .

It is a cyclic number.

It is not a de Polignac number, because 23325021145 - 2¹ = 23325021143 is a prime.

It is a super-2 number, since 2×23325021145² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (23325021143) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2332502110 + ... + 2332502119.

It is an arithmetic number, because the mean of its divisors is an integer number (6997506345).

Almost surely, 2^23325021145 is an apocalyptic number.

It is an amenable number.

23325021145 is a deficient number, since it is larger than the sum of its proper divisors (4665004235).

23325021145 is an equidigital number, since it uses as much as digits as its factorization.

23325021145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4665004234.

The product of its (nonzero) digits is 7200, while the sum is 28.

Adding to 23325021145 its reverse (54112052332), we get a palindrome (77437073477).

The spelling of 23325021145 in words is "twenty-three billion, three hundred twenty-five million, twenty-one thousand, one hundred forty-five".