20846025 has 48 divisors (see below), whose sum is σ = 38836800. Its totient is φ = 10961280.

The previous prime is 20846017. The next prime is 20846039. The reversal of 20846025 is 52064802.

It is not a de Polignac number, because 20846025 - 2³ = 20846017 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 20846025.

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 59902 + ... + 60248.

It is an arithmetic number, because the mean of its divisors is an integer number (809100).

Almost surely, 2^20846025 is an apocalyptic number.

20846025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20846025 is a deficient number, since it is larger than the sum of its proper divisors (17990775).

20846025 is a wasteful number, since it uses less digits than its factorization.

20846025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 455 (or 444 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

The square root of 20846025 is about 4565.7447366229. The cubic root of 20846025 is about 275.2164686785.

The spelling of 20846025 in words is "twenty million, eight hundred forty-six thousand, twenty-five".