25389944260 has 192 divisors, whose sum is σ = 60085960704. Its totient is φ = 8976844800.

The previous prime is 25389944249. The next prime is 25389944299. The reversal of 25389944260 is 6244998352.

It is a junction number, because it is equal to n+sod(n) for n = 25389944198 and 25389944207.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 28819020 + ... + 28819900.

It is an arithmetic number, because the mean of its divisors is an integer number (312947712).

Almost surely, 2^25389944260 is an apocalyptic number.

25389944260 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25389944260, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30042980352).

25389944260 is an abundant number, since it is smaller than the sum of its proper divisors (34696016444).

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

25389944260 is a wasteful number, since it uses less digits than its factorization.

25389944260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1034 (or 1032 counting only the distinct ones).

The product of its (nonzero) digits is 3732480, while the sum is 52.

The spelling of 25389944260 in words is "twenty-five billion, three hundred eighty-nine million, nine hundred forty-four thousand, two hundred sixty".