25961600915 has 16 divisors (see below), whose sum is σ = 33527273760. Its totient is φ = 19227102720.

The previous prime is 25961600887. The next prime is 25961600963. The reversal of 25961600915 is 51900616952.

It is not a de Polignac number, because 25961600915 - 2⁶ = 25961600851 is a prime.

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 15 ways as a sum of consecutive naturals, for example, 2498345 + ... + 2508714.

It is an arithmetic number, because the mean of its divisors is an integer number (2095454610).

Almost surely, 2^25961600915 is an apocalyptic number.

25961600915 is a deficient number, since it is larger than the sum of its proper divisors (7565672845).

25961600915 is a wasteful number, since it uses less digits than its factorization.

25961600915 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5007142.

The product of its (nonzero) digits is 145800, while the sum is 44.

The spelling of 25961600915 in words is "twenty-five billion, nine hundred sixty-one million, six hundred thousand, nine hundred fifteen".