125666705 has 8 divisors (see below), whose sum is σ = 151017000. Its totient is φ = 100388736.

The previous prime is 125666699. The next prime is 125666711. The reversal of 125666705 is 507666521.

It is an interprime number because it is at equal distance from previous prime (125666699) and next prime (125666711).

It can be written as a sum of positive squares in 4 ways, for example, as 204304 + 125462401 = 452^2 + 11201^2 .

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 125666705 - 2²⁰ = 124618129 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14180 + ... + 21269.

It is an arithmetic number, because the mean of its divisors is an integer number (18877125).

Almost surely, 2^125666705 is an apocalyptic number.

It is an amenable number.

125666705 is a deficient number, since it is larger than the sum of its proper divisors (25350295).

125666705 is an equidigital number, since it uses as much as digits as its factorization.

125666705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36163.

The product of its (nonzero) digits is 75600, while the sum is 38.

The square root of 125666705 is about 11210.1161902988. The cubic root of 125666705 is about 500.8873642378.

The spelling of 125666705 in words is "one hundred twenty-five million, six hundred sixty-six thousand, seven hundred five".