18054553374225 has 243 divisors, whose sum is σ = 36296359733907. Its totient is φ = 8575904885760.

The previous prime is 18054553374197. The next prime is 18054553374251. The reversal of 18054553374225 is 52247335545081.

The square root of 18054553374225 is 4249065.

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

18054553374225 is a `hidden beast` number, since 1 + 8 + 0 + 5 + 45 + 5 + 3 + 374 + 225 = 666.

It can be written as a sum of positive squares in 13 ways, for example, as 1144298738961 + 16910254635264 = 1069719^2 + 4112208^2 .

It is not a de Polignac number, because 18054553374225 - 2¹⁵ = 18054553341457 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 242 ways as a sum of consecutive naturals, for example, 20586719487 + ... + 20586720363.

Almost surely, 2^{18054553374225} is an apocalyptic number.

18054553374225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

18054553374225 is the 4249065-th square number.

18054553374225 is the 2124533-rd centered octagonal number.

It is an amenable number.

18054553374225 is an abundant number, since it is smaller than the sum of its proper divisors (18241806359682).

18054553374225 is an equidigital number, since it uses as much as digits as its factorization.

18054553374225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1842 (or 921 counting only the distinct ones).

The product of its (nonzero) digits is 20160000, while the sum is 54.

The spelling of 18054553374225 in words is "eighteen trillion, fifty-four billion, five hundred fifty-three million, three hundred seventy-four thousand, two hundred twenty-five".