25852031520 has 576 divisors, whose sum is σ = 97620961536. Its totient is φ = 5732106240.

The previous prime is 25852031519. The next prime is 25852031549. The reversal of 25852031520 is 2513025852.

It is a super-2 number, since 2×25852031520² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

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 95 ways as a sum of consecutive naturals, for example, 188700892 + ... + 188701028.

It is an arithmetic number, because the mean of its divisors is an integer number (169480836).

Almost surely, 2^25852031520 is an apocalyptic number.

25852031520 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 25852031520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (48810480768).

25852031520 is an abundant number, since it is smaller than the sum of its proper divisors (71768930016).

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

25852031520 is a wasteful number, since it uses less digits than its factorization.

25852031520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 353 (or 338 counting only the distinct ones).

The product of its (nonzero) digits is 24000, while the sum is 33.

The spelling of 25852031520 in words is "twenty-five billion, eight hundred fifty-two million, thirty-one thousand, five hundred twenty".