82125775 has 12 divisors (see below), whose sum is σ = 101973384. Its totient is φ = 65612000.

The previous prime is 82125773. The next prime is 82125781. The reversal of 82125775 is 57752128.

It is not a de Polignac number, because 82125775 - 2¹ = 82125773 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82125773) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21780 + ... + 25270.

It is an arithmetic number, because the mean of its divisors is an integer number (8497782).

Almost surely, 2^82125775 is an apocalyptic number.

82125775 is a deficient number, since it is larger than the sum of its proper divisors (19847609).

82125775 is a wasteful number, since it uses less digits than its factorization.

82125775 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4442 (or 4437 counting only the distinct ones).

The product of its digits is 39200, while the sum is 37.

The square root of 82125775 is about 9062.3272397326. The cubic root of 82125775 is about 434.6701599668.

The spelling of 82125775 in words is "eighty-two million, one hundred twenty-five thousand, seven hundred seventy-five".