28125103 has 2 divisors, whose sum is σ = 28125104. Its totient is φ = 28125102.

The previous prime is 28125079. The next prime is 28125107. The reversal of 28125103 is 30152182.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28125103 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28125107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14062551 + 14062552.

It is an arithmetic number, because the mean of its divisors is an integer number (14062552).

Almost surely, 2^28125103 is an apocalyptic number.

28125103 is a deficient number, since it is larger than the sum of its proper divisors (1).

28125103 is an equidigital number, since it uses as much as digits as its factorization.

28125103 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 480, while the sum is 22.

The square root of 28125103 is about 5303.3105698233. The cubic root of 28125103 is about 304.1104710178.

Adding to 28125103 its reverse (30152182), we get a palindrome (58277285).

The spelling of 28125103 in words is "twenty-eight million, one hundred twenty-five thousand, one hundred three".