125686835287 has 16 divisors (see below), whose sum is σ = 140914398240. Its totient is φ = 111304432512.

The previous prime is 125686835279. The next prime is 125686835291. The reversal of 125686835287 is 782538686521.

It is not a de Polignac number, because 125686835287 - 2³ = 125686835279 is a prime.

It is a super-2 number, since 2×125686835287² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125686835227) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1002553 + ... + 1120930.

It is an arithmetic number, because the mean of its divisors is an integer number (8807149890).

Almost surely, 2^125686835287 is an apocalyptic number.

125686835287 is a deficient number, since it is larger than the sum of its proper divisors (15227562953).

125686835287 is a wasteful number, since it uses less digits than its factorization.

125686835287 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2123682.

The product of its digits is 38707200, while the sum is 61.

The spelling of 125686835287 in words is "one hundred twenty-five billion, six hundred eighty-six million, eight hundred thirty-five thousand, two hundred eighty-seven".