20825363 has 8 divisors (see below), whose sum is σ = 22562400. Its totient is φ = 19221384.

The previous prime is 20825359. The next prime is 20825381. The reversal of 20825363 is 36352802.

It is not a de Polignac number, because 20825363 - 2² = 20825359 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20825863) 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, 2543 + ... + 6936.

It is an arithmetic number, because the mean of its divisors is an integer number (2820300).

Almost surely, 2^20825363 is an apocalyptic number.

20825363 is a deficient number, since it is larger than the sum of its proper divisors (1737037).

20825363 is an frugal number, since it uses more digits than its factorization.

20825363 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9518 (or 9492 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 29.

The square root of 20825363 is about 4563.4814560815. The cubic root of 20825363 is about 275.1255096510.

The spelling of 20825363 in words is "twenty million, eight hundred twenty-five thousand, three hundred sixty-three".