2118465695025 has 81 divisors (see below), whose sum is σ = 4005408221451. Its totient is φ = 1070173075680.

The previous prime is 2118465694973. The next prime is 2118465695033. The reversal of 2118465695025 is 5205965648112.

The square root of 2118465695025 is 1455495.

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

2118465695025 is a `hidden beast` number, since 2 + 1 + 1 + 8 + 4 + 6 + 569 + 50 + 25 = 666.

It can be written as a sum of positive squares in only one way, i.e., 762647650209 + 1355818044816 = 873297^2 + 1164396^2 .

It is not a de Polignac number, because 2118465695025 - 2¹³ = 2118465686833 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 80 ways as a sum of consecutive naturals, for example, 414813522 + ... + 414818628.

Almost surely, 2^{2118465695025} is an apocalyptic number.

2118465695025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

2118465695025 is the 1455495-th square number.

2118465695025 is the 727748-th centered octagonal number.

It is an amenable number.

2118465695025 is a deficient number, since it is larger than the sum of its proper divisors (1886942526426).

2118465695025 is an frugal number, since it uses more digits than its factorization.

2118465695025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10268 (or 5134 counting only the distinct ones).

The product of its (nonzero) digits is 5184000, while the sum is 54.

The spelling of 2118465695025 in words is "two trillion, one hundred eighteen billion, four hundred sixty-five million, six hundred ninety-five thousand, twenty-five".