25433 has 4 divisors (see below), whose sum is σ = 26340. Its totient is φ = 24528.

The previous prime is 25423. The next prime is 25439. The reversal of 25433 is 33452.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 17689 + 7744 = 133^2 + 88^2 .

It is a cyclic number.

It is not a de Polignac number, because 25433 - 2¹⁴ = 9049 is a prime.

It is a d-powerful number, because it can be written as 2¹³ + 5³ + 4⁷ + 3 + 3⁶ .

It is a Duffinian number.

It is a Curzon number.

It is a plaindrome in base 9.

It is a nialpdrome in base 13.

It is not an unprimeable number, because it can be changed into a prime (25439) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 410 + ... + 467.

It is an arithmetic number, because the mean of its divisors is an integer number (6585).

2²⁵⁴³³ is an apocalyptic number.

It is an amenable number.

25433 is a deficient number, since it is larger than the sum of its proper divisors (907).

25433 is an equidigital number, since it uses as much as digits as its factorization.

25433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 906.

The product of its digits is 360, while the sum is 17.

The square root of 25433 is about 159.4772711078. The cubic root of 25433 is about 29.4080253285.

Adding to 25433 its reverse (33452), we get a palindrome (58885).

The spelling of 25433 in words is "twenty-five thousand, four hundred thirty-three".