12012358833225 has 81 divisors (see below), whose sum is σ = 22709329530069. Its totient is φ = 6068903270400.

The previous prime is 12012358833199. The next prime is 12012358833229. The reversal of 12012358833225 is 52233885321021.

The square root of 12012358833225 is 3465885.

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

12012358833225 is a `hidden beast` number, since 1 + 2 + 0 + 1 + 235 + 88 + 332 + 2 + 5 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 2013280047801 + 9999078785424 = 1418901^2 + 3162132^2 .

It is not a de Polignac number, because 12012358833225 - 2⁹ = 12012358832713 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12012358833229) by changing a digit.

It is a polite number, since it can be written in 80 ways as a sum of consecutive naturals, for example, 987771145 + ... + 987783305.

Almost surely, 2^{12012358833225} is an apocalyptic number.

12012358833225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12012358833225 is the 3465885-th square number.

12012358833225 is the 1732943-rd centered octagonal number.

It is an amenable number.

12012358833225 is a deficient number, since it is larger than the sum of its proper divisors (10696970696844).

12012358833225 is an frugal number, since it uses more digits than its factorization.

12012358833225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24376 (or 12188 counting only the distinct ones).

The product of its (nonzero) digits is 691200, while the sum is 45.

The spelling of 12012358833225 in words is "twelve trillion, twelve billion, three hundred fifty-eight million, eight hundred thirty-three thousand, two hundred twenty-five".