19395225 has 18 divisors (see below), whose sum is σ = 34739406. Its totient is φ = 10344000.

The previous prime is 19395223. The next prime is 19395239. The reversal of 19395225 is 52259391.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 9 + 19395216 = 3^2 + 4404^2 .

It is not a de Polignac number, because 19395225 - 2¹ = 19395223 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 19395225.

It is not an unprimeable number, because it can be changed into a prime (19395223) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 42876 + ... + 43325.

It is an arithmetic number, because the mean of its divisors is an integer number (1929967).

Almost surely, 2^19395225 is an apocalyptic number.

19395225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

19395225 is a deficient number, since it is larger than the sum of its proper divisors (15344181).

19395225 is a wasteful number, since it uses less digits than its factorization.

19395225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86217 (or 86209 counting only the distinct ones).

The product of its digits is 24300, while the sum is 36.

The square root of 19395225 is about 4404.0010217982. The cubic root of 19395225 is about 268.6776910207.

The spelling of 19395225 in words is "nineteen million, three hundred ninety-five thousand, two hundred twenty-five".