19831225 has 12 divisors (see below), whose sum is σ = 24686416. Its totient is φ = 15803280.

The previous prime is 19831219. The next prime is 19831237. The reversal of 19831225 is 52213891.

It is not a de Polignac number, because 19831225 - 2¹¹ = 19829177 is a prime.

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5674 + ... + 8476.

Almost surely, 2^19831225 is an apocalyptic number.

It is an amenable number.

19831225 is a deficient number, since it is larger than the sum of its proper divisors (4855191).

19831225 is a wasteful number, since it uses less digits than its factorization.

19831225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3096 (or 3091 counting only the distinct ones).

The product of its digits is 4320, while the sum is 31.

The square root of 19831225 is about 4453.2263584956. The cubic root of 19831225 is about 270.6760606949.

The spelling of 19831225 in words is "nineteen million, eight hundred thirty-one thousand, two hundred twenty-five".