25045 has 4 divisors (see below), whose sum is σ = 30060. Its totient is φ = 20032.

The previous prime is 25037. The next prime is 25057. The reversal of 25045 is 54052.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 10404 + 14641 = 102^2 + 121^2 .

It is a cyclic number.

It is not a de Polignac number, because 25045 - 2³ = 25037 is a prime.

25045 is a modest number, since divided by 45 gives 25 as remainder.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2500 + ... + 2509.

It is an arithmetic number, because the mean of its divisors is an integer number (7515).

2²⁵⁰⁴⁵ is an apocalyptic number.

It is an amenable number.

25045 is a deficient number, since it is larger than the sum of its proper divisors (5015).

25045 is an equidigital number, since it uses as much as digits as its factorization.

25045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5014.

The product of its (nonzero) digits is 200, while the sum is 16.

The square root of 25045 is about 158.2561215246. The cubic root of 25045 is about 29.2577109726.

Adding to 25045 its reverse (54052), we get a palindrome (79097).

The spelling of 25045 in words is "twenty-five thousand, forty-five".