19733225 has 18 divisors (see below), whose sum is σ = 25028346. Its totient is φ = 15433600.

The previous prime is 19733201. The next prime is 19733237. The reversal of 19733225 is 52233791.

It can be written as a sum of positive squares in 9 ways, for example, as 906304 + 18826921 = 952^2 + 4339^2 .

It is not a de Polignac number, because 19733225 - 2⁸ = 19732969 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 19733191 and 19733200.

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 in 17 ways as a sum of consecutive naturals, for example, 70085 + ... + 70365.

Almost surely, 2^19733225 is an apocalyptic number.

It is an amenable number.

19733225 is a deficient number, since it is larger than the sum of its proper divisors (5295121).

19733225 is an equidigital number, since it uses as much as digits as its factorization.

19733225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 397 (or 339 counting only the distinct ones).

The product of its digits is 11340, while the sum is 32.

The square root of 19733225 is about 4442.2094727737. The cubic root of 19733225 is about 270.2294574341.

The spelling of 19733225 in words is "nineteen million, seven hundred thirty-three thousand, two hundred twenty-five".