3125873687 has 4 divisors (see below), whose sum is σ = 3153536400. Its totient is φ = 3098210976.

The previous prime is 3125873683. The next prime is 3125873731. The reversal of 3125873687 is 7863785213.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 3125873687 - 2² = 3125873683 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3125873683) 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, 13831187 + ... + 13831412.

It is an arithmetic number, because the mean of its divisors is an integer number (788384100).

Almost surely, 2^3125873687 is an apocalyptic number.

3125873687 is a deficient number, since it is larger than the sum of its proper divisors (27662713).

3125873687 is a wasteful number, since it uses less digits than its factorization.

3125873687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27662712.

The product of its digits is 1693440, while the sum is 50.

The square root of 3125873687 is about 55909.5133854696. The cubic root of 3125873687 is about 1462.1451058128.

The spelling of 3125873687 in words is "three billion, one hundred twenty-five million, eight hundred seventy-three thousand, six hundred eighty-seven".