20352265 has 8 divisors (see below), whose sum is σ = 24883848. Its totient is φ = 15974400.

The previous prime is 20352259. The next prime is 20352289. The reversal of 20352265 is 56225302.

It can be written as a sum of positive squares in 4 ways, for example, as 9223369 + 11128896 = 3037^2 + 3336^2 .

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

It is not a de Polignac number, because 20352265 - 2¹¹ = 20350217 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 38136 + ... + 38665.

It is an arithmetic number, because the mean of its divisors is an integer number (3110481).

Almost surely, 2^20352265 is an apocalyptic number.

It is an amenable number.

20352265 is a deficient number, since it is larger than the sum of its proper divisors (4531583).

20352265 is an equidigital number, since it uses as much as digits as its factorization.

20352265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76859.

The product of its (nonzero) digits is 3600, while the sum is 25.

The square root of 20352265 is about 4511.3484680304. The cubic root of 20352265 is about 273.0261528613.

Adding to 20352265 its reverse (56225302), we get a palindrome (76577567).

The spelling of 20352265 in words is "twenty million, three hundred fifty-two thousand, two hundred sixty-five".