20568425 has 12 divisors (see below), whose sum is σ = 25589136. Its totient is φ = 16400400.

The previous prime is 20568421. The next prime is 20568451. The reversal of 20568425 is 52486502.

It is not a de Polignac number, because 20568425 - 2² = 20568421 is a prime.

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20568391 and 20568400.

It is not an unprimeable number, because it can be changed into a prime (20568421) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7490 + ... + 9860.

It is an arithmetic number, because the mean of its divisors is an integer number (2132428).

Almost surely, 2^20568425 is an apocalyptic number.

20568425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20568425 is a deficient number, since it is larger than the sum of its proper divisors (5020711).

20568425 is a wasteful number, since it uses less digits than its factorization.

20568425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2728 (or 2723 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 32.

The square root of 20568425 is about 4535.2425513968. The cubic root of 20568425 is about 273.9893481571.

The spelling of 20568425 in words is "twenty million, five hundred sixty-eight thousand, four hundred twenty-five".