13018525 has 24 divisors (see below), whose sum is σ = 17826984. Its totient is φ = 9369600.

The previous prime is 13018519. The next prime is 13018531. The reversal of 13018525 is 52581031.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (13018519) and next prime (13018531).

It can be written as a sum of positive squares in 12 ways, for example, as 6017209 + 7001316 = 2453^2 + 2646^2 .

It is not a de Polignac number, because 13018525 - 2⁵ = 13018493 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13018525.

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 12837 + ... + 13813.

It is an arithmetic number, because the mean of its divisors is an integer number (742791).

Almost surely, 2^13018525 is an apocalyptic number.

It is an amenable number.

13018525 is a deficient number, since it is larger than the sum of its proper divisors (4808459).

13018525 is a wasteful number, since it uses less digits than its factorization.

13018525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1041 (or 1036 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 25.

The square root of 13018525 is about 3608.1193162089. The cubic root of 13018525 is about 235.2451041597.

Adding to 13018525 its reverse (52581031), we get a palindrome (65599556).

The spelling of 13018525 in words is "thirteen million, eighteen thousand, five hundred twenty-five".