13805125 has 8 divisors (see below), whose sum is σ = 17228952. Its totient is φ = 11044000.

The previous prime is 13805119. The next prime is 13805147. The reversal of 13805125 is 52150831.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1985281 + 11819844 = 1409^2 + 3438^2 .

It is not a de Polignac number, because 13805125 - 2³ = 13805117 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 13805125.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55096 + ... + 55345.

It is an arithmetic number, because the mean of its divisors is an integer number (2153619).

Almost surely, 2^13805125 is an apocalyptic number.

It is an amenable number.

13805125 is a deficient number, since it is larger than the sum of its proper divisors (3423827).

13805125 is an equidigital number, since it uses as much as digits as its factorization.

13805125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110456 (or 110446 counting only the distinct ones).

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

The square root of 13805125 is about 3715.5248619811. The cubic root of 13805125 is about 239.8907199246.

Adding to 13805125 its reverse (52150831), we get a palindrome (65955956).

The spelling of 13805125 in words is "thirteen million, eight hundred five thousand, one hundred twenty-five".