82188251525 has 6 divisors (see below), whose sum is σ = 101913431922. Its totient is φ = 65750601200.

The previous prime is 82188251501. The next prime is 82188251533. The reversal of 82188251525 is 52515288128.

It can be written as a sum of positive squares in 3 ways, for example, as 1096007236 + 81092244289 = 33106^2 + 284767^2 .

It is not a de Polignac number, because 82188251525 - 2¹² = 82188247429 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 82188251525.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1643765006 + ... + 1643765055.

It is an arithmetic number, because the mean of its divisors is an integer number (16985571987).

Almost surely, 2^82188251525 is an apocalyptic number.

It is an amenable number.

82188251525 is a deficient number, since it is larger than the sum of its proper divisors (19725180397).

82188251525 is a wasteful number, since it uses less digits than its factorization.

82188251525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3287530071 (or 3287530066 counting only the distinct ones).

The product of its digits is 512000, while the sum is 47.

The spelling of 82188251525 in words is "eighty-two billion, one hundred eighty-eight million, two hundred fifty-one thousand, five hundred twenty-five".