82722585 has 32 divisors (see below), whose sum is σ = 147474432. Its totient is φ = 39250880.

The previous prime is 82722581. The next prime is 82722589. The reversal of 82722585 is 58522728.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (82722581) and next prime (82722589).

It is not a de Polignac number, because 82722585 - 2² = 82722581 is a prime.

It is not an unprimeable number, because it can be changed into a prime (82722581) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2422 + ... + 13088.

It is an arithmetic number, because the mean of its divisors is an integer number (4608576).

Almost surely, 2^82722585 is an apocalyptic number.

It is an amenable number.

82722585 is a deficient number, since it is larger than the sum of its proper divisors (64751847).

82722585 is a wasteful number, since it uses less digits than its factorization.

82722585 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10733.

The product of its digits is 89600, while the sum is 39.

The square root of 82722585 is about 9095.1957098240. The cubic root of 82722585 is about 435.7205392174.

The spelling of 82722585 in words is "eighty-two million, seven hundred twenty-two thousand, five hundred eighty-five".