125756739 has 16 divisors (see below), whose sum is σ = 192317440. Its totient is φ = 81132840.

The previous prime is 125756711. The next prime is 125756759. The reversal of 125756739 is 937657521.

125756739 is a `hidden beast` number, since 1 + 2 + 57 + 567 + 39 = 666.

It is not a de Polignac number, because 125756739 - 2⁵ = 125756707 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 125756694 and 125756703.

It is not an unprimeable number, because it can be changed into a prime (125756759) 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 15 ways as a sum of consecutive naturals, for example, 74287 + ... + 75960.

It is an arithmetic number, because the mean of its divisors is an integer number (12019840).

Almost surely, 2^125756739 is an apocalyptic number.

125756739 is a deficient number, since it is larger than the sum of its proper divisors (66560701).

125756739 is a wasteful number, since it uses less digits than its factorization.

125756739 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150287 (or 150281 counting only the distinct ones).

The product of its digits is 396900, while the sum is 45.

The square root of 125756739 is about 11214.1312191360. The cubic root of 125756739 is about 501.0069560510.

The spelling of 125756739 in words is "one hundred twenty-five million, seven hundred fifty-six thousand, seven hundred thirty-nine".