25103 has 4 divisors (see below), whose sum is σ = 27048. Its totient is φ = 23160.

The previous prime is 25097. The next prime is 25111. The reversal of 25103 is 30152.

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

It is a cyclic number.

It is not a de Polignac number, because 25103 - 2⁴ = 25087 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a nialpdrome in base 14.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 25103.

It is not an unprimeable number, because it can be changed into a prime (25153) 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 3 ways as a sum of consecutive naturals, for example, 953 + ... + 978.

It is an arithmetic number, because the mean of its divisors is an integer number (6762).

2²⁵¹⁰³ is an apocalyptic number.

25103 is a deficient number, since it is larger than the sum of its proper divisors (1945).

25103 is a wasteful number, since it uses less digits than its factorization.

25103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1944.

The product of its (nonzero) digits is 30, while the sum is 11.

The square root of 25103 is about 158.4392628107. The cubic root of 25103 is about 29.2802788700.

Adding to 25103 its reverse (30152), we get a palindrome (55255).

It can be divided in two parts, 25 and 103, that added together give a 7-th power (128 = 2⁷).

The spelling of 25103 in words is "twenty-five thousand, one hundred three".