25629 has 4 divisors (see below), whose sum is σ = 34176. Its totient is φ = 17084.

The previous prime is 25621. The next prime is 25633. The reversal of 25629 is 92652.

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 25629 - 2³ = 25621 is a prime.

It is a D-number.

It is a nialpdrome in base 13.

It is a junction number, because it is equal to n+sod(n) for n = 25599 and 25608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4269 + ... + 4274.

It is an arithmetic number, because the mean of its divisors is an integer number (8544).

2²⁵⁶²⁹ is an apocalyptic number.

It is an amenable number.

25629 is a deficient number, since it is larger than the sum of its proper divisors (8547).

25629 is an equidigital number, since it uses as much as digits as its factorization.

25629 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8546.

The product of its digits is 1080, while the sum is 24.

The square root of 25629 is about 160.0905993492. The cubic root of 25629 is about 29.4833766346.

The spelling of 25629 in words is "twenty-five thousand, six hundred twenty-nine".