19425 has 24 divisors (see below), whose sum is σ = 37696. Its totient is φ = 8640.

The previous prime is 19423. The next prime is 19427. The reversal of 19425 is 52491.

19425 is nontrivially palindromic in base 4 and base 14.

19425 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (19423) and next prime (19427).

It is not a de Polignac number, because 19425 - 2¹ = 19423 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Duffinian number.

It is a Curzon number.

It is a zygodrome in base 6.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19421) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 507 + ... + 543.

2¹⁹⁴²⁵ is an apocalyptic number.

19425 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

19425 is a deficient number, since it is larger than the sum of its proper divisors (18271).

19425 is a wasteful number, since it uses less digits than its factorization.

19425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57 (or 52 counting only the distinct ones).

The product of its digits is 360, while the sum is 21.

The square root of 19425 is about 139.3735986477. The cubic root of 19425 is about 26.8815109518.

It can be divided in two parts, 19 and 425, that added together give a palindrome (444).

The spelling of 19425 in words is "nineteen thousand, four hundred twenty-five".