13381525 has 12 divisors (see below), whose sum is σ = 16669444. Its totient is φ = 10656000.

The previous prime is 13381523. The next prime is 13381549. The reversal of 13381525 is 52518331.

It can be written as a sum of positive squares in 6 ways, for example, as 88209 + 13293316 = 297^2 + 3646^2 .

It is not a de Polignac number, because 13381525 - 2¹ = 13381523 is a prime.

It is a super-2 number, since 2×13381525² = 358130422651250, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13381493 and 13381502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13381523) 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, 4915 + ... + 7135.

Almost surely, 2^13381525 is an apocalyptic number.

It is an amenable number.

13381525 is a deficient number, since it is larger than the sum of its proper divisors (3287919).

13381525 is a wasteful number, since it uses less digits than its factorization.

13381525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2472 (or 2467 counting only the distinct ones).

The product of its digits is 3600, while the sum is 28.

The square root of 13381525 is about 3658.0766804429. The cubic root of 13381525 is about 237.4115644888.

Adding to 13381525 its reverse (52518331), we get a palindrome (65899856).

The spelling of 13381525 in words is "thirteen million, three hundred eighty-one thousand, five hundred twenty-five".