125768637 has 12 divisors (see below), whose sum is σ = 182065884. Its totient is φ = 83661120.

The previous prime is 125768633. The next prime is 125768647. The reversal of 125768637 is 736867521.

125768637 is a `hidden beast` number, since 1 + 2 + 5 + 7 + 6 + 8 + 637 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 80892036 + 44876601 = 8994^2 + 6699^2 .

It is not a de Polignac number, because 125768637 - 2² = 125768633 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 125768592 and 125768601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125768633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11008 + ... + 19305.

It is an arithmetic number, because the mean of its divisors is an integer number (15172157).

Almost surely, 2^125768637 is an apocalyptic number.

It is an amenable number.

125768637 is a deficient number, since it is larger than the sum of its proper divisors (56297247).

125768637 is a wasteful number, since it uses less digits than its factorization.

125768637 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30780 (or 30777 counting only the distinct ones).

The product of its digits is 423360, while the sum is 45.

The square root of 125768637 is about 11214.6616979738. The cubic root of 125768637 is about 501.0227558478.

The spelling of 125768637 in words is "one hundred twenty-five million, seven hundred sixty-eight thousand, six hundred thirty-seven".