12507529529 has 4 divisors (see below), whose sum is σ = 13644577680. Its totient is φ = 11370481380.

The previous prime is 12507529511. The next prime is 12507529571. The reversal of 12507529529 is 92592570521.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12507529529 - 2¹⁶ = 12507463993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12507529579) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 568524059 + ... + 568524080.

It is an arithmetic number, because the mean of its divisors is an integer number (3411144420).

Almost surely, 2^12507529529 is an apocalyptic number.

It is an amenable number.

12507529529 is a deficient number, since it is larger than the sum of its proper divisors (1137048151).

12507529529 is a wasteful number, since it uses less digits than its factorization.

12507529529 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1137048150.

The product of its (nonzero) digits is 567000, while the sum is 47.

The spelling of 12507529529 in words is "twelve billion, five hundred seven million, five hundred twenty-nine thousand, five hundred twenty-nine".