25512052320 has 288 divisors, whose sum is σ = 92866108608. Its totient is φ = 6355451904.

The previous prime is 25512052283. The next prime is 25512052399. The reversal of 25512052320 is 2325021552.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3349957 + ... + 3357563.

It is an arithmetic number, because the mean of its divisors is an integer number (322451766).

Almost surely, 2^25512052320 is an apocalyptic number.

25512052320 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 25512052320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (46433054304).

25512052320 is an abundant number, since it is smaller than the sum of its proper divisors (67354056288).

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

25512052320 is a wasteful number, since it uses less digits than its factorization.

25512052320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7782 (or 7771 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 27.

Adding to 25512052320 its reverse (2325021552), we get a palindrome (27837073872).

The spelling of 25512052320 in words is "twenty-five billion, five hundred twelve million, fifty-two thousand, three hundred twenty".