82425216 has 64 divisors (see below), whose sum is σ = 223649280. Its totient is φ = 26884608.

The previous prime is 82425199. The next prime is 82425223. The reversal of 82425216 is 61252428.

It is a tau number, because it is divible by the number of its divisors (64).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15765 + ... + 20331.

It is an arithmetic number, because the mean of its divisors is an integer number (3494520).

Almost surely, 2^82425216 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 82425216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (111824640).

82425216 is an abundant number, since it is smaller than the sum of its proper divisors (141224064).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

82425216 is a wasteful number, since it uses less digits than its factorization.

82425216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4631 (or 4619 counting only the distinct ones).

The product of its digits is 7680, while the sum is 30.

The square root of 82425216 is about 9078.8334052344. The cubic root of 82425216 is about 435.1978067219.

The spelling of 82425216 in words is "eighty-two million, four hundred twenty-five thousand, two hundred sixteen".