12118707225 has 81 divisors (see below), whose sum is σ = 22373263549. Its totient is φ = 6270441600.

The previous prime is 12118707187. The next prime is 12118707241. The reversal of 12118707225 is 52270781121.

The square root of 12118707225 is 110085.

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 5100959241 + 7017747984 = 71421^2 + 83772^2 .

It is not a de Polignac number, because 12118707225 - 2²³ = 12110318617 is a prime.

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 12118707225.

It is an unprimeable number.

It is a polite number, since it can be written in 80 ways as a sum of consecutive naturals, for example, 67702186 + ... + 67702364.

Almost surely, 2^12118707225 is an apocalyptic number.

12118707225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12118707225 is the 110085-th square number.

12118707225 is the 55043-rd centered octagonal number.

It is an amenable number.

12118707225 is a deficient number, since it is larger than the sum of its proper divisors (10254556324).

12118707225 is an equidigital number, since it uses as much as digits as its factorization.

12118707225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 456 (or 228 counting only the distinct ones).

The product of its (nonzero) digits is 15680, while the sum is 36.

Multiplying 12118707225 by its sum of digits (36), we get a square (436273460100 = 660510²).

The spelling of 12118707225 in words is "twelve billion, one hundred eighteen million, seven hundred seven thousand, two hundred twenty-five".