25783313920 has 480 divisors, whose sum is σ = 78722648928. Its totient is φ = 8026324992.

The previous prime is 25783313917. The next prime is 25783313929. The reversal of 25783313920 is 2931338752.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25783313929) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 158179759 + ... + 158179921.

Almost surely, 2^25783313920 is an apocalyptic number.

25783313920 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 25783313920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39361324464).

25783313920 is an abundant number, since it is smaller than the sum of its proper divisors (52939335008).

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

25783313920 is a wasteful number, since it uses less digits than its factorization.

25783313920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 310 (or 287 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 43.

The spelling of 25783313920 in words is "twenty-five billion, seven hundred eighty-three million, three hundred thirteen thousand, nine hundred twenty".