25921118463 has 8 divisors (see below), whose sum is σ = 34578334128. Its totient is φ = 17272324224.

The previous prime is 25921118449. The next prime is 25921118479. The reversal of 25921118463 is 36481112952.

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

It is not a de Polignac number, because 25921118463 - 2⁹ = 25921117951 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25921118963) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2098170 + ... + 2110487.

It is an arithmetic number, because the mean of its divisors is an integer number (4322291766).

Almost surely, 2^25921118463 is an apocalyptic number.

25921118463 is a deficient number, since it is larger than the sum of its proper divisors (8657215665).

25921118463 is a wasteful number, since it uses less digits than its factorization.

25921118463 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4210713.

The product of its digits is 103680, while the sum is 42.

The spelling of 25921118463 in words is "twenty-five billion, nine hundred twenty-one million, one hundred eighteen thousand, four hundred sixty-three".