12533520512525 has 12 divisors (see below), whose sum is σ = 15586097152500. Its totient is φ = 9998086270080.

The previous prime is 12533520512501. The next prime is 12533520512549. The reversal of 12533520512525 is 52521502533521.

It is an interprime number because it is at equal distance from previous prime (12533520512501) and next prime (12533520512549).

It can be written as a sum of positive squares in 6 ways, for example, as 45452960809 + 12488067551716 = 213197^2 + 3533846^2 .

It is not a de Polignac number, because 12533520512525 - 2²² = 12533516318221 is a prime.

It is a super-4 number, since 4×12533520512525⁴ (a number of 53 digits) contains 4444 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 718244600 + ... + 718262049.

It is an arithmetic number, because the mean of its divisors is an integer number (1298841429375).

Almost surely, 2^{12533520512525} is an apocalyptic number.

It is an amenable number.

12533520512525 is a deficient number, since it is larger than the sum of its proper divisors (3052576639975).

12533520512525 is a wasteful number, since it uses less digits than its factorization.

12533520512525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1436507008 (or 1436507003 counting only the distinct ones).

The product of its (nonzero) digits is 450000, while the sum is 41.

The spelling of 12533520512525 in words is "twelve trillion, five hundred thirty-three billion, five hundred twenty million, five hundred twelve thousand, five hundred twenty-five".