25818984968 has 64 divisors (see below), whose sum is σ = 55592784000. Its totient is φ = 11012147712.

The previous prime is 25818984967. The next prime is 25818984977. The reversal of 25818984968 is 86948981852.

It is a super-2 number, since 2×25818984968² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 25818984898 and 25818984907.

It is not an unprimeable number, because it can be changed into a prime (25818984967) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12394055 + ... + 12396137.

It is an arithmetic number, because the mean of its divisors is an integer number (868637250).

Almost surely, 2^25818984968 is an apocalyptic number.

25818984968 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

25818984968 is an abundant number, since it is smaller than the sum of its proper divisors (29773799032).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25818984968 is a wasteful number, since it uses less digits than its factorization.

25818984968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3054 (or 3050 counting only the distinct ones).

The product of its digits is 79626240, while the sum is 68.

The spelling of 25818984968 in words is "twenty-five billion, eight hundred eighteen million, nine hundred eighty-four thousand, nine hundred sixty-eight".