12525012636636 has 24 divisors (see below), whose sum is σ = 29225089192320. Its totient is φ = 4174995682672.

The previous prime is 12525012636541. The next prime is 12525012636641. The reversal of 12525012636636 is 63663621052521.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8448895 + ... + 9820073.

It is an arithmetic number, because the mean of its divisors is an integer number (1217712049680).

Almost surely, 2^{12525012636636} is an apocalyptic number.

It is an amenable number.

12525012636636 is an abundant number, since it is smaller than the sum of its proper divisors (16700076555684).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12525012636636 is a wasteful number, since it uses less digits than its factorization.

12525012636636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2132393 (or 2132391 counting only the distinct ones).

The product of its (nonzero) digits is 2332800, while the sum is 48.

The spelling of 12525012636636 in words is "twelve trillion, five hundred twenty-five billion, twelve million, six hundred thirty-six thousand, six hundred thirty-six".