20225005 has 8 divisors (see below), whose sum is σ = 24394392. Its totient is φ = 16097088.

The previous prime is 20224999. The next prime is 20225011. The reversal of 20225005 is 50052202.

It is an interprime number because it is at equal distance from previous prime (20224999) and next prime (20225011).

It can be written as a sum of positive squares in 4 ways, for example, as 9162729 + 11062276 = 3027^2 + 3326^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20225005 - 2²³ = 11836397 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20225005.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9282 + ... + 11251.

It is an arithmetic number, because the mean of its divisors is an integer number (3049299).

Almost surely, 2^20225005 is an apocalyptic number.

It is an amenable number.

20225005 is a deficient number, since it is larger than the sum of its proper divisors (4169387).

20225005 is a wasteful number, since it uses less digits than its factorization.

20225005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20735.

The product of its (nonzero) digits is 200, while the sum is 16.

The square root of 20225005 is about 4497.2219202525. The cubic root of 20225005 is about 272.4558972477.

Adding to 20225005 its reverse (50052202), we get a palindrome (70277207).

The spelling of 20225005 in words is "twenty million, two hundred twenty-five thousand, five".