125689651 has 8 divisors (see below), whose sum is σ = 126720000. Its totient is φ = 124663560.

The previous prime is 125689649. The next prime is 125689657. The reversal of 125689651 is 156986521.

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

It is a cyclic number.

It is not a de Polignac number, because 125689651 - 2¹ = 125689649 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 125689598 and 125689607.

It is not an unprimeable number, because it can be changed into a prime (125689657) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 83100 + ... + 84598.

It is an arithmetic number, because the mean of its divisors is an integer number (15840000).

Almost surely, 2^125689651 is an apocalyptic number.

125689651 is a deficient number, since it is larger than the sum of its proper divisors (1030349).

125689651 is a wasteful number, since it uses less digits than its factorization.

125689651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2129.

The product of its digits is 129600, while the sum is 43.

The square root of 125689651 is about 11211.1395941715. The cubic root of 125689651 is about 500.9178487431.

The spelling of 125689651 in words is "one hundred twenty-five million, six hundred eighty-nine thousand, six hundred fifty-one".