25787520528 has 160 divisors (see below), whose sum is σ = 83488561152. Its totient is φ = 6663168000.

The previous prime is 25787520463. The next prime is 25787520533. The reversal of 25787520528 is 82502578752.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 695253 + ... + 731403.

Almost surely, 2^25787520528 is an apocalyptic number.

25787520528 is a gapful number since it is divisible by the number (28) 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 25787520528, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41744280576).

25787520528 is an abundant number, since it is smaller than the sum of its proper divisors (57701040624).

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

25787520528 is a wasteful number, since it uses less digits than its factorization.

25787520528 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36373 (or 36367 counting only the distinct ones).

The product of its (nonzero) digits is 3136000, while the sum is 51.

The spelling of 25787520528 in words is "twenty-five billion, seven hundred eighty-seven million, five hundred twenty thousand, five hundred twenty-eight".