19164225 has 12 divisors (see below), whose sum is σ = 31684976. Its totient is φ = 10220880.

The previous prime is 19164209. The next prime is 19164227. The reversal of 19164225 is 52246191.

It is not a de Polignac number, because 19164225 - 2⁴ = 19164209 is a prime.

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 19164192 and 19164201.

It is not an unprimeable number, because it can be changed into a prime (19164227) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 127687 + ... + 127836.

Almost surely, 2^19164225 is an apocalyptic number.

19164225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

19164225 is a deficient number, since it is larger than the sum of its proper divisors (12520751).

19164225 is a wasteful number, since it uses less digits than its factorization.

19164225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 255536 (or 255531 counting only the distinct ones).

The product of its digits is 4320, while the sum is 30.

The square root of 19164225 is about 4377.6963119888. The cubic root of 19164225 is about 267.6067643818.

The spelling of 19164225 in words is "nineteen million, one hundred sixty-four thousand, two hundred twenty-five".