82020020625 has 30 divisors (see below), whose sum is σ = 148044324714. Its totient is φ = 43744008000.

The previous prime is 82020020603. The next prime is 82020020633. The reversal of 82020020625 is 52602002028.

It can be written as a sum of positive squares in 5 ways, for example, as 28647932049 + 53372088576 = 169257^2 + 231024^2 .

It is not a de Polignac number, because 82020020625 - 2¹⁸ = 82019758481 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 7285044 + ... + 7296293.

Almost surely, 2^82020020625 is an apocalyptic number.

It is an amenable number.

82020020625 is a deficient number, since it is larger than the sum of its proper divisors (66024304089).

82020020625 is a wasteful number, since it uses less digits than its factorization.

82020020625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14581363 (or 14581345 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

The spelling of 82020020625 in words is "eighty-two billion, twenty million, twenty thousand, six hundred twenty-five".