20363225 has 12 divisors (see below), whose sum is σ = 25335804. Its totient is φ = 16235520.

The previous prime is 20363197. The next prime is 20363251. The reversal of 20363225 is 52236302.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 50176 + 20313049 = 224^2 + 4507^2 .

It is not a de Polignac number, because 20363225 - 2¹⁰ = 20362201 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 20363225.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7217 + ... + 9633.

It is an arithmetic number, because the mean of its divisors is an integer number (2111317).

Almost surely, 2^20363225 is an apocalyptic number.

20363225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20363225 is a deficient number, since it is larger than the sum of its proper divisors (4972579).

20363225 is a wasteful number, since it uses less digits than its factorization.

20363225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2764 (or 2759 counting only the distinct ones).

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

The square root of 20363225 is about 4512.5630189505. The cubic root of 20363225 is about 273.0751536261.

Adding to 20363225 its reverse (52236302), we get a palindrome (72599527).

The spelling of 20363225 in words is "twenty million, three hundred sixty-three thousand, two hundred twenty-five".