82702147725 has 18 divisors (see below), whose sum is σ = 148128736106. Its totient is φ = 44107812000.

The previous prime is 82702147721. The next prime is 82702147729. The reversal of 82702147725 is 52774120728.

It is an interprime number because it is at equal distance from previous prime (82702147721) and next prime (82702147729).

It can be written as a sum of positive squares in 3 ways, for example, as 22070964969 + 60631182756 = 148563^2 + 246234^2 .

It is not a de Polignac number, because 82702147725 - 2² = 82702147721 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82702147721) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 183782326 + ... + 183782775.

Almost surely, 2^82702147725 is an apocalyptic number.

It is an amenable number.

82702147725 is a deficient number, since it is larger than the sum of its proper divisors (65426588381).

82702147725 is a wasteful number, since it uses less digits than its factorization.

82702147725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 367565117 (or 367565109 counting only the distinct ones).

The product of its (nonzero) digits is 439040, while the sum is 45.

The spelling of 82702147725 in words is "eighty-two billion, seven hundred two million, one hundred forty-seven thousand, seven hundred twenty-five".