125856618246465 has 16 divisors (see below), whose sum is σ = 206053626153408. Its totient is φ = 65562517411776.

The previous prime is 125856618246439. The next prime is 125856618246521. The reversal of 125856618246465 is 564642816658521.

It is not a de Polignac number, because 125856618246465 - 2¹¹ = 125856618244417 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 125856618246465.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 97563269314 + ... + 97563270603.

It is an arithmetic number, because the mean of its divisors is an integer number (12878351634588).

Almost surely, 2^{125856618246465} is an apocalyptic number.

125856618246465 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

125856618246465 is a deficient number, since it is larger than the sum of its proper divisors (80197007906943).

125856618246465 is a wasteful number, since it uses less digits than its factorization.

125856618246465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 195126539968.

The product of its digits is 663552000, while the sum is 69.

The spelling of 125856618246465 in words is "one hundred twenty-five trillion, eight hundred fifty-six billion, six hundred eighteen million, two hundred forty-six thousand, four hundred sixty-five".