20412825 has 12 divisors (see below), whose sum is σ = 33749328. Its totient is φ = 10886800.

The previous prime is 20412817. The next prime is 20412871. The reversal of 20412825 is 52821402.

It is not a de Polignac number, because 20412825 - 2³ = 20412817 is a prime.

It is a plaindrome in base 16.

It is a junction number, because it is equal to n+sod(n) for n = 20412795 and 20412804.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 136011 + ... + 136160.

It is an arithmetic number, because the mean of its divisors is an integer number (2812444).

Almost surely, 2^20412825 is an apocalyptic number.

20412825 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20412825 is a deficient number, since it is larger than the sum of its proper divisors (13336503).

20412825 is a wasteful number, since it uses less digits than its factorization.

20412825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 272184 (or 272179 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 24.

The square root of 20412825 is about 4518.0554445469. The cubic root of 20412825 is about 273.2966893503.

The spelling of 20412825 in words is "twenty million, four hundred twelve thousand, eight hundred twenty-five".