25232843520 has 288 divisors, whose sum is σ = 89784253440. Its totient is φ = 6710538240.

The previous prime is 25232843437. The next prime is 25232843533. The reversal of 25232843520 is 2534823252.

25232843520 is a `hidden beast` number, since 2 + 5 + 23 + 284 + 352 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (288).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 16968217 + ... + 16969703.

It is an arithmetic number, because the mean of its divisors is an integer number (311750880).

Almost surely, 2^25232843520 is an apocalyptic number.

25232843520 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 25232843520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44892126720).

25232843520 is an abundant number, since it is smaller than the sum of its proper divisors (64551409920).

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

25232843520 is a wasteful number, since it uses less digits than its factorization.

25232843520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2008 (or 1988 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 36.

The spelling of 25232843520 in words is "twenty-five billion, two hundred thirty-two million, eight hundred forty-three thousand, five hundred twenty".