1078446168225 has 54 divisors (see below), whose sum is σ = 2005808267190. Its totient is φ = 575171202240.

The previous prime is 1078446168211. The next prime is 1078446168227. The reversal of 1078446168225 is 5228616448701.

1078446168225 is a `hidden beast` number, since 1 + 0 + 7 + 84 + 461 + 6 + 82 + 25 = 666.

It can be written as a sum of positive squares in 3 ways, for example, as 156823128081 + 921623040144 = 396009^2 + 960012^2 .

It is not a de Polignac number, because 1078446168225 - 2⁴ = 1078446168209 is a prime.

It is a super-2 number, since 2×1078446168225² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1078446168227) 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 53 ways as a sum of consecutive naturals, for example, 3123420 + ... + 3451469.

Almost surely, 2^{1078446168225} is an apocalyptic number.

1078446168225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1078446168225 is a deficient number, since it is larger than the sum of its proper divisors (927362098965).

1078446168225 is an frugal number, since it uses more digits than its factorization.

1078446168225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6574923 (or 6574897 counting only the distinct ones).

The product of its (nonzero) digits is 5160960, while the sum is 54.

The spelling of 1078446168225 in words is "one trillion, seventy-eight billion, four hundred forty-six million, one hundred sixty-eight thousand, two hundred twenty-five".