87751813025 has 24 divisors (see below), whose sum is σ = 114582696000. Its totient is φ = 66481387200.

The previous prime is 87751813007. The next prime is 87751813109. The reversal of 87751813025 is 52031815778.

It is a happy number.

It is not a de Polignac number, because 87751813025 - 2¹² = 87751808929 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1268276 + ... + 1335674.

It is an arithmetic number, because the mean of its divisors is an integer number (4774279000).

Almost surely, 2^87751813025 is an apocalyptic number.

It is an amenable number.

87751813025 is a deficient number, since it is larger than the sum of its proper divisors (26830882975).

87751813025 is a wasteful number, since it uses less digits than its factorization.

87751813025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70169 (or 70164 counting only the distinct ones).

The product of its (nonzero) digits is 470400, while the sum is 47.

The spelling of 87751813025 in words is "eighty-seven billion, seven hundred fifty-one million, eight hundred thirteen thousand, twenty-five".