80666847525 has 24 divisors (see below), whose sum is σ = 145493661024. Its totient is φ = 39111198400.

The previous prime is 80666847511. The next prime is 80666847529. The reversal of 80666847525 is 52574866608.

It is not a de Polignac number, because 80666847525 - 2⁸ = 80666847269 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80666847529) 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, 48888174 + ... + 48889823.

It is an arithmetic number, because the mean of its divisors is an integer number (6062235876).

Almost surely, 2^80666847525 is an apocalyptic number.

It is an amenable number.

80666847525 is a deficient number, since it is larger than the sum of its proper divisors (64826813499).

80666847525 is a wasteful number, since it uses less digits than its factorization.

80666847525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97778021 (or 97778016 counting only the distinct ones).

The product of its (nonzero) digits is 19353600, while the sum is 57.

The spelling of 80666847525 in words is "eighty billion, six hundred sixty-six million, eight hundred forty-seven thousand, five hundred twenty-five".