25707282720 has 384 divisors, whose sum is σ = 98151782400. Its totient is φ = 5524733952.

The previous prime is 25707282719. The next prime is 25707282721. The reversal of 25707282720 is 2728270752.

It is an interprime number because it is at equal distance from previous prime (25707282719) and next prime (25707282721).

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (25707282721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 8872312 + ... + 8875208.

It is an arithmetic number, because the mean of its divisors is an integer number (255603600).

Almost surely, 2^25707282720 is an apocalyptic number.

25707282720 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 25707282720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (49075891200).

25707282720 is an abundant number, since it is smaller than the sum of its proper divisors (72444499680).

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

25707282720 is a wasteful number, since it uses less digits than its factorization.

25707282720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3080 (or 3072 counting only the distinct ones).

The product of its (nonzero) digits is 219520, while the sum is 42.

The spelling of 25707282720 in words is "twenty-five billion, seven hundred seven million, two hundred eighty-two thousand, seven hundred twenty".