18022525504 has 63 divisors (see below), whose sum is σ = 36346031067. Its totient is φ = 8866811904.

The previous prime is 18022525453. The next prime is 18022525511. The reversal of 18022525504 is 40552522081.

The square root of 18022525504 is 134248.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 3118999104 + 14903526400 = 55848^2 + 122080^2 .

It is a super-2 number, since 2×18022525504² (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 18022525504.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 104176362 + ... + 104176534.

Almost surely, 2^18022525504 is an apocalyptic number.

18022525504 is the 134248-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18022525504

18022525504 is an abundant number, since it is smaller than the sum of its proper divisors (18323505563).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18022525504 is an frugal number, since it uses more digits than its factorization.

18022525504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 552 (or 272 counting only the distinct ones).

The product of its (nonzero) digits is 32000, while the sum is 34.

The spelling of 18022525504 in words is "eighteen billion, twenty-two million, five hundred twenty-five thousand, five hundred four".