25330 has 16 divisors (see below), whose sum is σ = 48600.
Its totient is φ = 9472.
The previous prime is 25321. The next prime is 25339. The reversal of 25330 is 3352.
25330 = T40 + T41 + ... +
It is an interprime number because it is at equal distance from previous prime (25321) and next prime (25339).
It can be written as a sum of positive squares in 4 ways, for example, as 18769 + 6561 = 137^2 + 81^2
25330 is an undulating number in base 13.
It is a plaindrome in base 12 and base 15.
It is a self number, because there is not a number n which added to its sum of digits gives 25330.
It is not an unprimeable number, because it can be changed into a prime (25339) by changing a digit.
25330 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 in 7 ways as a sum of consecutive naturals, for example, 96 + ... + 244.
225330 is an apocalyptic number.
25330 is a deficient number, since it is larger than the sum of its proper divisors (23270).
25330 is a wasteful number, since it uses less digits than its factorization.
25330 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 173.
The product of its (nonzero) digits is 90, while the sum is 13.
The square root of 25330 is about 159.1540134587.
The cubic root of 25330 is about 29.3682721879.
Adding to 25330 its reverse (3352), we get a palindrome (28682).
The spelling of 25330 in words is "twenty-five thousand, three hundred thirty".