13825222 has 4 divisors (see below), whose sum is σ = 20737836. Its totient is φ = 6912610.

The previous prime is 13825213. The next prime is 13825243. The reversal of 13825222 is 22252831.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 22252831 = 29 ⋅767339.

It is a super-2 number, since 2×13825222² = 382273526698568, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 3456304 + ... + 3456307.

It is an arithmetic number, because the mean of its divisors is an integer number (5184459).

Almost surely, 2^13825222 is an apocalyptic number.

13825222 is a deficient number, since it is larger than the sum of its proper divisors (6912614).

13825222 is an equidigital number, since it uses as much as digits as its factorization.

13825222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6912613.

The product of its digits is 1920, while the sum is 25.

The square root of 13825222 is about 3718.2283415627. The cubic root of 13825222 is about 240.0070715509.

The spelling of 13825222 in words is "thirteen million, eight hundred twenty-five thousand, two hundred twenty-two".