18375225523 has 8 divisors (see below), whose sum is σ = 19563616800. Its totient is φ = 17198778240.

The previous prime is 18375225493. The next prime is 18375225551. The reversal of 18375225523 is 32552257381.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18375225523 is a prime.

It is a super-2 number, since 2×18375225523² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 18375225523.

It is not an unprimeable number, because it can be changed into a prime (18375225563) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2982823 + ... + 2988976.

It is an arithmetic number, because the mean of its divisors is an integer number (2445452100).

Almost surely, 2^18375225523 is an apocalyptic number.

18375225523 is a deficient number, since it is larger than the sum of its proper divisors (1188391277).

18375225523 is a wasteful number, since it uses less digits than its factorization.

18375225523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5971997.

The product of its digits is 504000, while the sum is 43.

The spelling of 18375225523 in words is "eighteen billion, three hundred seventy-five million, two hundred twenty-five thousand, five hundred twenty-three".