20301225 has 24 divisors (see below), whose sum is σ = 38360640. Its totient is φ = 9280320.

The previous prime is 20301221. The next prime is 20301257. The reversal of 20301225 is 52210302.

It is not a de Polignac number, because 20301225 - 2² = 20301221 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (20301221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 18810 + ... + 19859.

It is an arithmetic number, because the mean of its divisors is an integer number (1598360).

Almost surely, 2^20301225 is an apocalyptic number.

20301225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20301225 is a deficient number, since it is larger than the sum of its proper divisors (18059415).

20301225 is a wasteful number, since it uses less digits than its factorization.

20301225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38689 (or 38684 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 15.

The square root of 20301225 is about 4505.6880717600. The cubic root of 20301225 is about 272.7977275046.

Adding to 20301225 its reverse (52210302), we get a palindrome (72511527).

The spelling of 20301225 in words is "twenty million, three hundred one thousand, two hundred twenty-five".