13507825 has 12 divisors (see below), whose sum is σ = 16906780. Its totient is φ = 10704960.

The previous prime is 13507801. The next prime is 13507829. The reversal of 13507825 is 52870531.

It can be written as a sum of positive squares in 6 ways, for example, as 309136 + 13198689 = 556^2 + 3633^2 .

It is not a de Polignac number, because 13507825 - 2⁹ = 13507313 is a prime.

It is a super-2 number, since 2×13507825² = 364922672461250, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (13507829) 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, 247 + ... + 5203.

Almost surely, 2^13507825 is an apocalyptic number.

It is an amenable number.

13507825 is a deficient number, since it is larger than the sum of its proper divisors (3398955).

13507825 is a wasteful number, since it uses less digits than its factorization.

13507825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5076 (or 5071 counting only the distinct ones).

The product of its (nonzero) digits is 8400, while the sum is 31.

The square root of 13507825 is about 3675.2993075395. The cubic root of 13507825 is about 238.1561541436.

The spelling of 13507825 in words is "thirteen million, five hundred seven thousand, eight hundred twenty-five".