686512043125 has 40 divisors (see below), whose sum is σ = 866522624000. Its totient is φ = 543676536000.

The previous prime is 686512043083. The next prime is 686512043167. The reversal of 686512043125 is 521340215686.

It is an interprime number because it is at equal distance from previous prime (686512043083) and next prime (686512043167).

It is not a de Polignac number, because 686512043125 - 2⁹ = 686512042613 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 87127936 + ... + 87135814.

It is an arithmetic number, because the mean of its divisors is an integer number (21663065600).

Almost surely, 2^686512043125 is an apocalyptic number.

It is an amenable number.

686512043125 is a deficient number, since it is larger than the sum of its proper divisors (180010580875).

686512043125 is a wasteful number, since it uses less digits than its factorization.

686512043125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9287 (or 9272 counting only the distinct ones).

The product of its (nonzero) digits is 345600, while the sum is 43.

The spelling of 686512043125 in words is "six hundred eighty-six billion, five hundred twelve million, forty-three thousand, one hundred twenty-five".