25613237650065 has 128 divisors (see below), whose sum is σ = 45137917440000. Its totient is φ = 12325168272384.

The previous prime is 25613237650027. The next prime is 25613237650079. The reversal of 25613237650065 is 56005673231652.

It is not a de Polignac number, because 25613237650065 - 2⁶ = 25613237650001 is a prime.

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 127 ways as a sum of consecutive naturals, for example, 4530907779 + ... + 4530913431.

It is an arithmetic number, because the mean of its divisors is an integer number (352639980000).

Almost surely, 2^{25613237650065} is an apocalyptic number.

It is an amenable number.

25613237650065 is a deficient number, since it is larger than the sum of its proper divisors (19524679789935).

25613237650065 is a wasteful number, since it uses less digits than its factorization.

25613237650065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7911.

The product of its (nonzero) digits is 6804000, while the sum is 51.

The spelling of 25613237650065 in words is "twenty-five trillion, six hundred thirteen billion, two hundred thirty-seven million, six hundred fifty thousand, sixty-five".