20425316 has 12 divisors (see below), whose sum is σ = 35776188. Its totient is φ = 10203552.

The previous prime is 20425303. The next prime is 20425319. The reversal of 20425316 is 61352402.

It can be written as a sum of positive squares in 2 ways, for example, as 3648100 + 16777216 = 1910^2 + 4096^2 .

It is a junction number, because it is equal to n+sod(n) for n = 20425291 and 20425300.

It is not an unprimeable number, because it can be changed into a prime (20425319) 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 3 ways as a sum of consecutive naturals, for example, 6710 + ... + 9266.

It is an arithmetic number, because the mean of its divisors is an integer number (2981349).

Almost surely, 2^20425316 is an apocalyptic number.

It is an amenable number.

20425316 is a deficient number, since it is larger than the sum of its proper divisors (15350872).

20425316 is a wasteful number, since it uses less digits than its factorization.

20425316 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4558 (or 4556 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 20425316 is about 4519.4375756282. The cubic root of 20425316 is about 273.3524231495.

Adding to 20425316 its reverse (61352402), we get a palindrome (81777718).

The spelling of 20425316 in words is "twenty million, four hundred twenty-five thousand, three hundred sixteen".