87525876865 has 24 divisors (see below), whose sum is σ = 126392057640. Its totient is φ = 57948162048.

The previous prime is 87525876833. The next prime is 87525876869. The reversal of 87525876865 is 56867852578.

It can be written as a sum of positive squares in 4 ways, for example, as 9997600144 + 77528276721 = 99988^2 + 278439^2 .

It is not a de Polignac number, because 87525876865 - 2⁵ = 87525876833 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 87525876865.

It is not an unprimeable number, because it can be changed into a prime (87525876869) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6152352 + ... + 6166561.

It is an arithmetic number, because the mean of its divisors is an integer number (5266335735).

Almost surely, 2^87525876865 is an apocalyptic number.

It is an amenable number.

87525876865 is a deficient number, since it is larger than the sum of its proper divisors (38866180775).

87525876865 is a wasteful number, since it uses less digits than its factorization.

87525876865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12318961 (or 12318954 counting only the distinct ones).

The product of its digits is 225792000, while the sum is 67.

The spelling of 87525876865 in words is "eighty-seven billion, five hundred twenty-five million, eight hundred seventy-six thousand, eight hundred sixty-five".