20825608 has 16 divisors (see below), whose sum is σ = 39785580. Its totient is φ = 10216128.

The previous prime is 20825599. The next prime is 20825611. The reversal of 20825608 is 80652802.

It can be written as a sum of positive squares in 2 ways, for example, as 18335524 + 2490084 = 4282^2 + 1578^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 20825608.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24135 + ... + 24982.

Almost surely, 2^20825608 is an apocalyptic number.

It is an amenable number.

20825608 is a deficient number, since it is larger than the sum of its proper divisors (18959972).

20825608 is a wasteful number, since it uses less digits than its factorization.

20825608 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49176 (or 49172 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 31.

The square root of 20825608 is about 4563.5082995432. The cubic root of 20825608 is about 275.1265885515.

The spelling of 20825608 in words is "twenty million, eight hundred twenty-five thousand, six hundred eight".