13125501 has 12 divisors (see below), whose sum is σ = 19242912. Its totient is φ = 8619336.

The previous prime is 13125499. The next prime is 13125509. The reversal of 13125501 is 10552131.

It is not a de Polignac number, because 13125501 - 2¹ = 13125499 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13125509) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10281 + ... + 11486.

It is an arithmetic number, because the mean of its divisors is an integer number (1603576).

Almost surely, 2^13125501 is an apocalyptic number.

It is an amenable number.

13125501 is a deficient number, since it is larger than the sum of its proper divisors (6117411).

13125501 is a wasteful number, since it uses less digits than its factorization.

13125501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21840 (or 21837 counting only the distinct ones).

The product of its (nonzero) digits is 150, while the sum is 18.

The square root of 13125501 is about 3622.9133304566. The cubic root of 13125501 is about 235.8877003296.

Adding to 13125501 its reverse (10552131), we get a palindrome (23677632).

The spelling of 13125501 in words is "thirteen million, one hundred twenty-five thousand, five hundred one".