18480412243225 has 27 divisors (see below), whose sum is σ = 22975060812543. Its totient is φ = 14746138500240.

The previous prime is 18480412243211. The next prime is 18480412243243. The reversal of 18480412243225 is 52234221408481.

The square root of 18480412243225 is 4298885.

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

It can be written as a sum of positive squares in only one way, i.e., 6652948407561 + 11827463835664 = 2579331^2 + 3439108^2 .

It is a de Polignac number, because none of the positive numbers 2^k-18480412243225 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 10725717214 + ... + 10725718936.

Almost surely, 2^{18480412243225} is an apocalyptic number.

18480412243225 is the 4298885-th square number.

18480412243225 is the 2149443-rd centered octagonal number.

It is an amenable number.

18480412243225 is a deficient number, since it is larger than the sum of its proper divisors (4494648569318).

18480412243225 is an frugal number, since it uses more digits than its factorization.

18480412243225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4454 (or 2227 counting only the distinct ones).

The product of its (nonzero) digits is 983040, while the sum is 46.

The spelling of 18480412243225 in words is "eighteen trillion, four hundred eighty billion, four hundred twelve million, two hundred forty-three thousand, two hundred twenty-five".