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25006 = 212503
BaseRepresentation
bin110000110101110
31021022011
412012232
51300011
6311434
7132622
oct60656
937264
1025006
1117873
121257a
13b4c7
149182
157621
hex61ae

25006 has 4 divisors (see below), whose sum is σ = 37512. Its totient is φ = 12502.

The previous prime is 24989. The next prime is 25013. The reversal of 25006 is 60052.

Adding to 25006 its reverse (60052), we get a palindrome (85058).

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

It is a Smith number, since the sum of its digits (13) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a plaindrome in base 12.

It is a nialpdrome in base 15.

It is a congruent number.

It is an unprimeable number.

25006 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6250 + ... + 6253.

It is an arithmetic number, because the mean of its divisors is an integer number (9378).

225006 is an apocalyptic number.

25006 is a deficient number, since it is larger than the sum of its proper divisors (12506).

25006 is a wasteful number, since it uses less digits than its factorization.

25006 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12505.

The product of its (nonzero) digits is 60, while the sum is 13.

The square root of 25006 is about 158.1328555361. The cubic root of 25006 is about 29.2425164092.

The spelling of 25006 in words is "twenty-five thousand, six".

Divisors: 1 2 12503 25006