13125403 has 2 divisors, whose sum is σ = 13125404. Its totient is φ = 13125402.

The previous prime is 13125401. The next prime is 13125407. The reversal of 13125403 is 30452131.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 13125403 - 2¹ = 13125401 is a prime.

Together with 13125401, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (13125401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6562701 + 6562702.

It is an arithmetic number, because the mean of its divisors is an integer number (6562702).

Almost surely, 2^13125403 is an apocalyptic number.

13125403 is a deficient number, since it is larger than the sum of its proper divisors (1).

13125403 is an equidigital number, since it uses as much as digits as its factorization.

13125403 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 13125403 is about 3622.8998054045. The cubic root of 13125403 is about 235.8871132523.

Adding to 13125403 its reverse (30452131), we get a palindrome (43577534).

The spelling of 13125403 in words is "thirteen million, one hundred twenty-five thousand, four hundred three".