82520572505 has 32 divisors (see below), whose sum is σ = 113781507840. Its totient is φ = 56280833280.

The previous prime is 82520572499. The next prime is 82520572597. The reversal of 82520572505 is 50527502528.

It is not a de Polignac number, because 82520572505 - 2²⁰ = 82519523929 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8739647 + ... + 8749083.

It is an arithmetic number, because the mean of its divisors is an integer number (3555672120).

Almost surely, 2^82520572505 is an apocalyptic number.

It is an amenable number.

82520572505 is a deficient number, since it is larger than the sum of its proper divisors (31260935335).

82520572505 is a wasteful number, since it uses less digits than its factorization.

82520572505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10769.

The product of its (nonzero) digits is 280000, while the sum is 41.

The spelling of 82520572505 in words is "eighty-two billion, five hundred twenty million, five hundred seventy-two thousand, five hundred five".