125606859839 has 4 divisors (see below), whose sum is σ = 125815856880. Its totient is φ = 125397862800.

The previous prime is 125606859823. The next prime is 125606859853. The reversal of 125606859839 is 938958606521.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 938958606521 = 13 ⋅72227585117.

It is a cyclic number.

It is not a de Polignac number, because 125606859839 - 2⁴ = 125606859823 is a prime.

It is a super-3 number, since 3×125606859839³ (a number of 34 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125606859869) 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, 104497619 + ... + 104498820.

It is an arithmetic number, because the mean of its divisors is an integer number (31453964220).

Almost surely, 2^125606859839 is an apocalyptic number.

125606859839 is a deficient number, since it is larger than the sum of its proper divisors (208997041).

125606859839 is an equidigital number, since it uses as much as digits as its factorization.

125606859839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 208997040.

The product of its (nonzero) digits is 27993600, while the sum is 62.

The spelling of 125606859839 in words is "one hundred twenty-five billion, six hundred six million, eight hundred fifty-nine thousand, eight hundred thirty-nine".