13425220 has 12 divisors (see below), whose sum is σ = 28193004. Its totient is φ = 5370080.

The previous prime is 13425187. The next prime is 13425233. The reversal of 13425220 is 2252431.

It can be written as a sum of positive squares in 2 ways, for example, as 4769856 + 8655364 = 2184^2 + 2942^2 .

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 335611 + ... + 335650.

It is an arithmetic number, because the mean of its divisors is an integer number (2349417).

Almost surely, 2^13425220 is an apocalyptic number.

13425220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13425220 is an abundant number, since it is smaller than the sum of its proper divisors (14767784).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13425220 is a wasteful number, since it uses less digits than its factorization.

13425220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 671270 (or 671268 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 13425220 is about 3664.0442137070. The cubic root of 13425220 is about 237.6696922082.

Adding to 13425220 its reverse (2252431), we get a palindrome (15677651).

The spelling of 13425220 in words is "thirteen million, four hundred twenty-five thousand, two hundred twenty".