13225420 has 24 divisors (see below), whose sum is σ = 29910384. Its totient is φ = 4883136.

The previous prime is 13225409. The next prime is 13225423. The reversal of 13225420 is 2452231.

It is not an unprimeable number, because it can be changed into a prime (13225423) 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 7 ways as a sum of consecutive naturals, for example, 25174 + ... + 25693.

It is an arithmetic number, because the mean of its divisors is an integer number (1246266).

Almost surely, 2^13225420 is an apocalyptic number.

13225420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13225420 is an abundant number, since it is smaller than the sum of its proper divisors (16684964).

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

13225420 is a wasteful number, since it uses less digits than its factorization.

13225420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50889 (or 50887 counting only the distinct ones).

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

The square root of 13225420 is about 3636.6770546751. The cubic root of 13225420 is about 236.4847595988.

Adding to 13225420 its reverse (2452231), we get a palindrome (15677651).

It can be divided in two parts, 132 and 25420, that added together give a palindrome (25552).

The spelling of 13225420 in words is "thirteen million, two hundred twenty-five thousand, four hundred twenty".