25718874720 has 384 divisors, whose sum is σ = 104267907072. Its totient is φ = 5171558400.

The previous prime is 25718874703. The next prime is 25718874733. The reversal of 25718874720 is 2747881752.

It is a super-2 number, since 2×25718874720² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

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, 1134537 + ... + 1156983.

It is an arithmetic number, because the mean of its divisors is an integer number (271531008).

Almost surely, 2^25718874720 is an apocalyptic number.

25718874720 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 25718874720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (52133953536).

25718874720 is an abundant number, since it is smaller than the sum of its proper divisors (78549032352).

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

25718874720 is a wasteful number, since it uses less digits than its factorization.

25718874720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22514 (or 22506 counting only the distinct ones).

The product of its (nonzero) digits is 1756160, while the sum is 51.

The spelling of 25718874720 in words is "twenty-five billion, seven hundred eighteen million, eight hundred seventy-four thousand, seven hundred twenty".