181425 has 24 divisors (see below), whose sum is σ = 312480. Its totient is φ = 92800.

The previous prime is 181421. The next prime is 181439. The reversal of 181425 is 524181.

It is not a de Polignac number, because 181425 - 2² = 181421 is a prime.

It is a Curzon number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 181425.

It is not an unprimeable number, because it can be changed into a prime (181421) 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, 3046 + ... + 3104.

It is an arithmetic number, because the mean of its divisors is an integer number (13020).

2¹⁸¹⁴²⁵ is an apocalyptic number.

181425 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

181425 is a deficient number, since it is larger than the sum of its proper divisors (131055).

181425 is a wasteful number, since it uses less digits than its factorization.

181425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113 (or 108 counting only the distinct ones).

The product of its digits is 320, while the sum is 21.

The square root of 181425 is about 425.9401366389. The cubic root of 181425 is about 56.6107676368.

It can be divided in two parts, 181 and 425, that added together give a palindrome (606).

The spelling of 181425 in words is "one hundred eighty-one thousand, four hundred twenty-five".