20225503 has 2 divisors, whose sum is σ = 20225504. Its totient is φ = 20225502.

The previous prime is 20225479. The next prime is 20225507. The reversal of 20225503 is 30552202.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20225503 - 2⁹ = 20224991 is a prime.

It is a plaindrome in base 16.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20225507) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10112751 + 10112752.

It is an arithmetic number, because the mean of its divisors is an integer number (10112752).

Almost surely, 2^20225503 is an apocalyptic number.

20225503 is a deficient number, since it is larger than the sum of its proper divisors (1).

20225503 is an equidigital number, since it uses as much as digits as its factorization.

20225503 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 600, while the sum is 19.

The square root of 20225503 is about 4497.2772874262. The cubic root of 20225503 is about 272.4581334552.

Adding to 20225503 its reverse (30552202), we get a palindrome (50777705).

The spelling of 20225503 in words is "twenty million, two hundred twenty-five thousand, five hundred three".