125438687 has 8 divisors (see below), whose sum is σ = 136950912. Its totient is φ = 113944600.

The previous prime is 125438669. The next prime is 125438689. The reversal of 125438687 is 786834521.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 125438687 - 2¹⁶ = 125373151 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 (125438689) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12848 + ... + 20394.

It is an arithmetic number, because the mean of its divisors is an integer number (17118864).

Almost surely, 2^125438687 is an apocalyptic number.

125438687 is a deficient number, since it is larger than the sum of its proper divisors (11512225).

125438687 is a wasteful number, since it uses less digits than its factorization.

125438687 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9069.

The product of its digits is 322560, while the sum is 44.

The square root of 125438687 is about 11199.9413837752. The cubic root of 125438687 is about 500.5842330775.

The spelling of 125438687 in words is "one hundred twenty-five million, four hundred thirty-eight thousand, six hundred eighty-seven".