20493325 has 18 divisors (see below), whose sum is σ = 26288682. Its totient is φ = 15847200.

The previous prime is 20493323. The next prime is 20493331. The reversal of 20493325 is 52339402.

It can be written as a sum of positive squares in 3 ways, for example, as 8649 + 20484676 = 93^2 + 4526^2 .

It is not a de Polignac number, because 20493325 - 2¹ = 20493323 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20493293 and 20493302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20493323) by changing a digit.

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 17 ways as a sum of consecutive naturals, for example, 23599 + ... + 24451.

Almost surely, 2^20493325 is an apocalyptic number.

20493325 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20493325 is a deficient number, since it is larger than the sum of its proper divisors (5795357).

20493325 is an equidigital number, since it uses as much as digits as its factorization.

20493325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 925 (or 889 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 28.

The square root of 20493325 is about 4526.9553786182. The cubic root of 20493325 is about 273.6554756600.

The spelling of 20493325 in words is "twenty million, four hundred ninety-three thousand, three hundred twenty-five".