12001450533525 has 18 divisors (see below), whose sum is σ = 21495931400450. Its totient is φ = 6400773617760.

The previous prime is 12001450533511. The next prime is 12001450533571. The reversal of 12001450533525 is 52533505410021.

12001450533525 is a `hidden beast` number, since 1 + 20 + 0 + 1 + 4 + 50 + 533 + 52 + 5 = 666.

It can be written as a sum of positive squares in 3 ways, for example, as 998636465124 + 11002814068401 = 999318^2 + 3317049^2 .

It is not a de Polignac number, because 12001450533525 - 2⁴ = 12001450533509 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12001450533525.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 26669889850 + ... + 26669890299.

Almost surely, 2^{12001450533525} is an apocalyptic number.

12001450533525 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12001450533525 is a deficient number, since it is larger than the sum of its proper divisors (9494480866925).

12001450533525 is a wasteful number, since it uses less digits than its factorization.

12001450533525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53339780165 (or 53339780157 counting only the distinct ones).

The product of its (nonzero) digits is 90000, while the sum is 36.

Adding to 12001450533525 its reverse (52533505410021), we get a palindrome (64534955943546).

The spelling of 12001450533525 in words is "twelve trillion, one billion, four hundred fifty million, five hundred thirty-three thousand, five hundred twenty-five".