87525654528 has 128 divisors (see below), whose sum is σ = 251355560400. Its totient is φ = 26930577408.

The previous prime is 87525654511. The next prime is 87525654529. The reversal of 87525654528 is 82545652578.

It is a tau number, because it is divible by the number of its divisors (128).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87525654529) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1243708 + ... + 1312196.

Almost surely, 2^87525654528 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 87525654528, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (125677780200).

87525654528 is an abundant number, since it is smaller than the sum of its proper divisors (163829905872).

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

87525654528 is an equidigital number, since it uses as much as digits as its factorization.

87525654528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68535 (or 68507 counting only the distinct ones).

The product of its digits is 26880000, while the sum is 57.

The spelling of 87525654528 in words is "eighty-seven billion, five hundred twenty-five million, six hundred fifty-four thousand, five hundred twenty-eight".