12509262812 has 12 divisors (see below), whose sum is σ = 22002334200. Its totient is φ = 6222881616.

The previous prime is 12509262803. The next prime is 12509262823. The reversal of 12509262812 is 21826290521.

It is a super-2 number, since 2×12509262812² (a number of 21 digits) contains 22 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 3 ways as a sum of consecutive naturals, for example, 7936562 + ... + 7938137.

It is an arithmetic number, because the mean of its divisors is an integer number (1833527850).

Almost surely, 2^12509262812 is an apocalyptic number.

It is an amenable number.

12509262812 is a deficient number, since it is larger than the sum of its proper divisors (9493071388).

12509262812 is a wasteful number, since it uses less digits than its factorization.

12509262812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15874900 (or 15874898 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 38.

The spelling of 12509262812 in words is "twelve billion, five hundred nine million, two hundred sixty-two thousand, eight hundred twelve".