25429 has 4 divisors (see below), whose sum is σ = 25920. Its totient is φ = 24940.

The previous prime is 25423. The next prime is 25439. The reversal of 25429 is 92452.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 25429 - 2⁷ = 25301 is a prime.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a nialpdrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25423) 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, 157 + ... + 274.

It is an arithmetic number, because the mean of its divisors is an integer number (6480).

2²⁵⁴²⁹ is an apocalyptic number.

It is an amenable number.

25429 is a deficient number, since it is larger than the sum of its proper divisors (491).

25429 is an equidigital number, since it uses as much as digits as its factorization.

25429 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 490.

The product of its digits is 720, while the sum is 22.

The square root of 25429 is about 159.4647296426. The cubic root of 25429 is about 29.4064835224.

It can be divided in two parts, 25 and 429, that added together give a palindrome (454).

The spelling of 25429 in words is "twenty-five thousand, four hundred twenty-nine".