87520893525 has 96 divisors (see below), whose sum is σ = 176082480000. Its totient is φ = 42356666880.

The previous prime is 87520893487. The next prime is 87520893527. The reversal of 87520893525 is 52539802578.

87520893525 is a `hidden beast` number, since 8 + 7 + 5 + 20 + 8 + 93 + 525 = 666.

It is not a de Polignac number, because 87520893525 - 2¹² = 87520889429 is a prime.

It is a super-3 number, since 3×87520893525³ (a number of 34 digits) contains 333 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87520893527) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 433201 + ... + 602249.

It is an arithmetic number, because the mean of its divisors is an integer number (1834192500).

Almost surely, 2^87520893525 is an apocalyptic number.

It is an amenable number.

87520893525 is an abundant number, since it is smaller than the sum of its proper divisors (88561586475).

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

87520893525 is a wasteful number, since it uses less digits than its factorization.

87520893525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169140 (or 169129 counting only the distinct ones).

The product of its (nonzero) digits is 6048000, while the sum is 54.

The spelling of 87520893525 in words is "eighty-seven billion, five hundred twenty million, eight hundred ninety-three thousand, five hundred twenty-five".