16256266125615 has 12 divisors (see below), whose sum is σ = 28177527951144. Its totient is φ = 8670008600304.

The previous prime is 16256266125611. The next prime is 16256266125623. The reversal of 16256266125615 is 51652166265261.

16256266125615 is a `hidden beast` number, since 1 + 6 + 2 + 5 + 6 + 2 + 6 + 6 + 12 + 5 + 615 = 666.

It is not a de Polignac number, because 16256266125615 - 2² = 16256266125611 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16256266125611) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 180625179129 + ... + 180625179218.

It is an arithmetic number, because the mean of its divisors is an integer number (2348127329262).

Almost surely, 2^{16256266125615} is an apocalyptic number.

16256266125615 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

16256266125615 is a deficient number, since it is larger than the sum of its proper divisors (11921261825529).

16256266125615 is a wasteful number, since it uses less digits than its factorization.

16256266125615 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 361250358358 (or 361250358355 counting only the distinct ones).

The product of its digits is 7776000, while the sum is 54.

The spelling of 16256266125615 in words is "sixteen trillion, two hundred fifty-six billion, two hundred sixty-six million, one hundred twenty-five thousand, six hundred fifteen".