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25289 = 11319
BaseRepresentation
bin110001011001001
31021200122
412023021
51302124
6313025
7133505
oct61311
937618
1025289
1118000
1212775
13b684
149305
15775e
hex62c9

25289 has 8 divisors (see below), whose sum is σ = 29280. Its totient is φ = 21780.

The previous prime is 25261. The next prime is 25301. The reversal of 25289 is 98252.

It is not a de Polignac number, because 25289 - 28 = 25033 is a prime.

It is a Duffinian number.

Its product of digits (1440) is a multiple of the sum of its prime divisors (30).

It is not an unprimeable number, because it can be changed into a prime (25219) 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 7 ways as a sum of consecutive naturals, for example, 1322 + ... + 1340.

It is an arithmetic number, because the mean of its divisors is an integer number (3660).

225289 is an apocalyptic number.

It is an amenable number.

25289 is a deficient number, since it is larger than the sum of its proper divisors (3991).

25289 is an equidigital number, since it uses as much as digits as its factorization.

25289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52 (or 30 counting only the distinct ones).

The product of its digits is 1440, while the sum is 26.

The square root of 25289 is about 159.0251552428. The cubic root of 25289 is about 29.3524181359.

It can be divided in two parts, 25 and 289, that multiplied together give a square (7225 = 852).

The spelling of 25289 in words is "twenty-five thousand, two hundred eighty-nine".

Divisors: 1 11 19 121 209 1331 2299 25289