125708647 has 4 divisors (see below), whose sum is σ = 129106216. Its totient is φ = 122311080.

The previous prime is 125708623. The next prime is 125708717. The reversal of 125708647 is 746807521.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 125708647 - 2⁷ = 125708519 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 (125708347) 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 3 ways as a sum of consecutive naturals, for example, 1698729 + ... + 1698802.

It is an arithmetic number, because the mean of its divisors is an integer number (32276554).

Almost surely, 2^125708647 is an apocalyptic number.

125708647 is a deficient number, since it is larger than the sum of its proper divisors (3397569).

125708647 is an equidigital number, since it uses as much as digits as its factorization.

125708647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3397568.

The product of its (nonzero) digits is 94080, while the sum is 40.

The square root of 125708647 is about 11211.9867552544. The cubic root of 125708647 is about 500.9430827382.

The spelling of 125708647 in words is "one hundred twenty-five million, seven hundred eight thousand, six hundred forty-seven".