20225286 has 24 divisors (see below), whose sum is σ = 44250960. Its totient is φ = 6675696.

The previous prime is 20225281. The next prime is 20225287. The reversal of 20225286 is 68252202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20225281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3601 + ... + 7308.

It is an arithmetic number, because the mean of its divisors is an integer number (1843790).

Almost surely, 2^20225286 is an apocalyptic number.

20225286 is an abundant number, since it is smaller than the sum of its proper divisors (24025674).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20225286 is a wasteful number, since it uses less digits than its factorization.

20225286 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11020 (or 11017 counting only the distinct ones).

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

The square root of 20225286 is about 4497.2531616532. The cubic root of 20225286 is about 272.4571590480.

Adding to 20225286 its reverse (68252202), we get a palindrome (88477488).

The spelling of 20225286 in words is "twenty million, two hundred twenty-five thousand, two hundred eighty-six".