25971900963 has 8 divisors (see below), whose sum is σ = 34630060800. Its totient is φ = 17314170888.

The previous prime is 25971900947. The next prime is 25971900973. The reversal of 25971900963 is 36900917952.

It is a happy number.

It is a Cunningham number, because it is equal to 161158²-1.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 25971900963 - 2⁴ = 25971900947 is a prime.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (25971900973) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 80578 + ... + 241736.

It is an arithmetic number, because the mean of its divisors is an integer number (4328757600).

Almost surely, 2^25971900963 is an apocalyptic number.

25971900963 is a deficient number, since it is larger than the sum of its proper divisors (8658159837).

25971900963 is a wasteful number, since it uses less digits than its factorization.

25971900963 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 214881.

The product of its (nonzero) digits is 918540, while the sum is 51.

The spelling of 25971900963 in words is "twenty-five billion, nine hundred seventy-one million, nine hundred thousand, nine hundred sixty-three".