82897125209 has 2 divisors, whose sum is σ = 82897125210. Its totient is φ = 82897125208.

The previous prime is 82897125193. The next prime is 82897125253. The reversal of 82897125209 is 90252179828.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 75402414025 + 7494711184 = 274595^2 + 86572^2 .

It is a cyclic number.

It is not a de Polignac number, because 82897125209 - 2⁴ = 82897125193 is a prime.

It is not a weakly prime, because it can be changed into another prime (82891125209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41448562604 + 41448562605.

It is an arithmetic number, because the mean of its divisors is an integer number (41448562605).

Almost surely, 2^82897125209 is an apocalyptic number.

It is an amenable number.

82897125209 is a deficient number, since it is larger than the sum of its proper divisors (1).

82897125209 is an equidigital number, since it uses as much as digits as its factorization.

82897125209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1451520, while the sum is 53.

The spelling of 82897125209 in words is "eighty-two billion, eight hundred ninety-seven million, one hundred twenty-five thousand, two hundred nine".