20825803 has 8 divisors (see below), whose sum is σ = 21534128. Its totient is φ = 20127744.

The previous prime is 20825801. The next prime is 20825807. The reversal of 20825803 is 30852802.

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 20825803 - 2¹ = 20825801 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20825801) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1675 + ... + 6667.

It is an arithmetic number, because the mean of its divisors is an integer number (2691766).

Almost surely, 2^20825803 is an apocalyptic number.

20825803 is a deficient number, since it is larger than the sum of its proper divisors (708325).

20825803 is an equidigital number, since it uses as much as digits as its factorization.

20825803 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5133.

The product of its (nonzero) digits is 3840, while the sum is 28.

The square root of 20825803 is about 4563.5296646346. The cubic root of 20825803 is about 275.1274472622.

The spelling of 20825803 in words is "twenty million, eight hundred twenty-five thousand, eight hundred three".