20332265 has 4 divisors (see below), whose sum is σ = 24398724. Its totient is φ = 16265808.

The previous prime is 20332259. The next prime is 20332271. The reversal of 20332265 is 56223302.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 56223302 = 2 ⋅28111651.

It is an interprime number because it is at equal distance from previous prime (20332259) and next prime (20332271).

It can be written as a sum of positive squares in 2 ways, for example, as 6885376 + 13446889 = 2624^2 + 3667^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20332265 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 20332265.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2033222 + ... + 2033231.

It is an arithmetic number, because the mean of its divisors is an integer number (6099681).

Almost surely, 2^20332265 is an apocalyptic number.

It is an amenable number.

20332265 is a deficient number, since it is larger than the sum of its proper divisors (4066459).

20332265 is an equidigital number, since it uses as much as digits as its factorization.

20332265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4066458.

The product of its (nonzero) digits is 2160, while the sum is 23.

The square root of 20332265 is about 4509.1312910582. The cubic root of 20332265 is about 272.9366900472.

Adding to 20332265 its reverse (56223302), we get a palindrome (76555567).

The spelling of 20332265 in words is "twenty million, three hundred thirty-two thousand, two hundred sixty-five".