87110571025 has 9 divisors (see below), whose sum is σ = 108018938001. Its totient is φ = 69687276240.

The previous prime is 87110571007. The next prime is 87110571061. The reversal of 87110571025 is 52017501178.

It is a happy number.

The square root of 87110571025 is 295145.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 22627078929 + 64483492096 = 150423^2 + 253936^2 .

It is not a de Polignac number, because 87110571025 - 2¹¹ = 87110568977 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1446211 + ... + 1505239.

Almost surely, 2^87110571025 is an apocalyptic number.

87110571025 is the 295145-th square number.

87110571025 is the 147573-rd centered octagonal number.

It is an amenable number.

87110571025 is a deficient number, since it is larger than the sum of its proper divisors (20908366976).

87110571025 is an frugal number, since it uses more digits than its factorization.

87110571025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118068 (or 59034 counting only the distinct ones).

The product of its (nonzero) digits is 19600, while the sum is 37.

The spelling of 87110571025 in words is "eighty-seven billion, one hundred ten million, five hundred seventy-one thousand, twenty-five".