125715887 has 4 divisors (see below), whose sum is σ = 137144616. Its totient is φ = 114287160.

The previous prime is 125715871. The next prime is 125715911. The reversal of 125715887 is 788517521.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 788517521 = 11 ⋅71683411.

It is a cyclic number.

It is not a de Polignac number, because 125715887 - 2⁴ = 125715871 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 (125715857) 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, 5714348 + ... + 5714369.

It is an arithmetic number, because the mean of its divisors is an integer number (34286154).

Almost surely, 2^125715887 is an apocalyptic number.

125715887 is a deficient number, since it is larger than the sum of its proper divisors (11428729).

125715887 is a wasteful number, since it uses less digits than its factorization.

125715887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11428728.

The product of its digits is 156800, while the sum is 44.

The square root of 125715887 is about 11212.3096193425. The cubic root of 125715887 is about 500.9526995741.

The spelling of 125715887 in words is "one hundred twenty-five million, seven hundred fifteen thousand, eight hundred eighty-seven".