19425223 has 4 divisors (see below), whose sum is σ = 19452960. Its totient is φ = 19397488.

The previous prime is 19425221. The next prime is 19425247. The reversal of 19425223 is 32252491.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32252491 = 1877 ⋅17183.

It is a cyclic number.

It is not a de Polignac number, because 19425223 - 2¹ = 19425221 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 19425191 and 19425200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19425221) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 12790 + ... + 14227.

It is an arithmetic number, because the mean of its divisors is an integer number (4863240).

Almost surely, 2^19425223 is an apocalyptic number.

19425223 is a deficient number, since it is larger than the sum of its proper divisors (27737).

19425223 is an equidigital number, since it uses as much as digits as its factorization.

19425223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27736.

The product of its digits is 4320, while the sum is 28.

The square root of 19425223 is about 4407.4054726108. The cubic root of 19425223 is about 268.8161381842.

The spelling of 19425223 in words is "nineteen million, four hundred twenty-five thousand, two hundred twenty-three".