13123525 has 6 divisors (see below), whose sum is σ = 16273202. Its totient is φ = 10498800.

The previous prime is 13123463. The next prime is 13123529. The reversal of 13123525 is 52532131.

It can be written as a sum of positive squares in 3 ways, for example, as 1406596 + 11716929 = 1186^2 + 3423^2 .

It is not a de Polignac number, because 13123525 - 2¹⁵ = 13090757 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13123496 and 13123505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13123529) 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 5 ways as a sum of consecutive naturals, for example, 262446 + ... + 262495.

Almost surely, 2^13123525 is an apocalyptic number.

It is an amenable number.

13123525 is a deficient number, since it is larger than the sum of its proper divisors (3149677).

13123525 is an equidigital number, since it uses as much as digits as its factorization.

13123525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 524951 (or 524946 counting only the distinct ones).

The product of its digits is 900, while the sum is 22.

The square root of 13123525 is about 3622.6406114877. The cubic root of 13123525 is about 235.8758623691.

Adding to 13123525 its reverse (52532131), we get a palindrome (65655656).

The spelling of 13123525 in words is "thirteen million, one hundred twenty-three thousand, five hundred twenty-five".