82812755331225 has 36 divisors (see below), whose sum is σ = 148327670809500. Its totient is φ = 44166557306880.

The previous prime is 82812755331167. The next prime is 82812755331227. The reversal of 82812755331225 is 52213355721828.

82812755331225 is a `hidden beast` number, since 8 + 2 + 8 + 1 + 2 + 75 + 533 + 12 + 25 = 666.

It can be written as a sum of positive squares in 6 ways, for example, as 13158241150041 + 69654514181184 = 3627429^2 + 8345928^2 .

It is not a de Polignac number, because 82812755331225 - 2²³ = 82812746942617 is a prime.

It is not an unprimeable number, because it can be changed into a prime (82812755331227) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 43916601 + ... + 45763449.

Almost surely, 2^{82812755331225} is an apocalyptic number.

It is an amenable number.

82812755331225 is a deficient number, since it is larger than the sum of its proper divisors (65514915478275).

82812755331225 is a wasteful number, since it uses less digits than its factorization.

82812755331225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2046154 (or 2046146 counting only the distinct ones).

The product of its digits is 8064000, while the sum is 54.

The spelling of 82812755331225 in words is "eighty-two trillion, eight hundred twelve billion, seven hundred fifty-five million, three hundred thirty-one thousand, two hundred twenty-five".