20825283 has 8 divisors (see below), whose sum is σ = 27954000. Its totient is φ = 13790048.

The previous prime is 20825267. The next prime is 20825293. The reversal of 20825283 is 38252802.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20825283 - 2⁴ = 20825267 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20825283.

It is not an unprimeable number, because it can be changed into a prime (20825243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22848 + ... + 23741.

It is an arithmetic number, because the mean of its divisors is an integer number (3494250).

Almost surely, 2^20825283 is an apocalyptic number.

20825283 is a deficient number, since it is larger than the sum of its proper divisors (7128717).

20825283 is a wasteful number, since it uses less digits than its factorization.

20825283 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46741.

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

The square root of 20825283 is about 4563.4726908353. The cubic root of 20825283 is about 275.1251573551.

It can be divided in two parts, 208252 and 83, that added together give a triangular number (208335 = T₆₄₅).

The spelling of 20825283 in words is "twenty million, eight hundred twenty-five thousand, two hundred eighty-three".