25984775964 has 48 divisors (see below), whose sum is σ = 72305468928. Its totient is φ = 7101428928.

The previous prime is 25984775963. The next prime is 25984775969. The reversal of 25984775964 is 46957748952.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 25984775895 and 25984775904.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25984775963) 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, 6722907 + ... + 6726770.

It is an arithmetic number, because the mean of its divisors is an integer number (1506363936).

Almost surely, 2^25984775964 is an apocalyptic number.

It is an amenable number.

25984775964 is an abundant number, since it is smaller than the sum of its proper divisors (46320692964).

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

25984775964 is a wasteful number, since it uses less digits than its factorization.

25984775964 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13449714 (or 13449712 counting only the distinct ones).

The product of its digits is 152409600, while the sum is 66.

The spelling of 25984775964 in words is "twenty-five billion, nine hundred eighty-four million, seven hundred seventy-five thousand, nine hundred sixty-four".