125259705 has 12 divisors (see below), whose sum is σ = 217116900. Its totient is φ = 66805152.

The previous prime is 125259683. The next prime is 125259803. The reversal of 125259705 is 507952521.

125259705 is a `hidden beast` number, since 12 + 52 + 597 + 0 + 5 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 80784144 + 44475561 = 8988^2 + 6669^2 .

It is a de Polignac number, because none of the positive numbers 2^k-125259705 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 125259705.

It is an unprimeable number.

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, 1391730 + ... + 1391819.

It is an arithmetic number, because the mean of its divisors is an integer number (18093075).

Almost surely, 2^125259705 is an apocalyptic number.

125259705 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

125259705 is a deficient number, since it is larger than the sum of its proper divisors (91857195).

125259705 is a wasteful number, since it uses less digits than its factorization.

125259705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2783560 (or 2783557 counting only the distinct ones).

The product of its (nonzero) digits is 31500, while the sum is 36.

The square root of 125259705 is about 11191.9482218245. The cubic root of 125259705 is about 500.3460337993.

The spelling of 125259705 in words is "one hundred twenty-five million, two hundred fifty-nine thousand, seven hundred five".