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25089 = 38363

25089 has 4 divisors (see below), whose sum is σ = 33456. Its totient is φ = 16724.

The previous prime is 25087. The next prime is 25097. The reversal of 25089 is 98052.

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 25089 - 21 = 25087 is a prime.

It is a D-number.

It is not an unprimeable number, because it can be changed into a prime (25087) 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, 4179 + ... + 4184.

It is an arithmetic number, because the mean of its divisors is an integer number (8364).

It is a Proth number, since it is equal to 49 ⋅ 29 + 1 and 49 < 29.

225089 is an apocalyptic number.

It is an amenable number.

25089 is a deficient number, since it is larger than the sum of its proper divisors (8367).

25089 is an equidigital number, since it uses as much as digits as its factorization.

25089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8366.

The product of its (nonzero) digits is 720, while the sum is 24.

The square root of 25089 is about 158.3950756810. The cubic root of 25089 is about 29.2748346318.

The spelling of 25089 in words is "twenty-five thousand, eighty-nine".

Divisors: 1 3 8363 25089