25049 has 4 divisors (see below), whose sum is σ = 25764.
Its totient is φ = 24336.
The previous prime is 25037. The next prime is 25057. The reversal of 25049 is 94052.
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 24025 + 1024 = 155^2 + 32^2
It is a cyclic number.
It is not a de Polignac number, because 25049 - 24 = 25033 is a prime.
It is a Duffinian number.
It is a self number, because there is not a number n which added to its sum of digits gives 25049.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (25349) 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, 302 + ... + 375.
It is an arithmetic number, because the mean of its divisors is an integer number (6441).
225049 is an apocalyptic number.
It is an amenable number.
25049 is a deficient number, since it is larger than the sum of its proper divisors (715).
25049 is an equidigital number, since it uses as much as digits as its factorization.
25049 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 714.
The product of its (nonzero) digits is 360, while the sum is 20.
The square root of 25049 is about 158.2687587618.
The cubic root of 25049 is about 29.2592684973.
The spelling of 25049 in words is "twenty-five thousand, forty-nine".