13875725 has 6 divisors (see below), whose sum is σ = 17205930. Its totient is φ = 11100560.

The previous prime is 13875677. The next prime is 13875737. The reversal of 13875725 is 52757831.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 4959529 + 8916196 = 2227^2 + 2986^2 .

It is not a de Polignac number, because 13875725 - 2⁶ = 13875661 is a prime.

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 5 ways as a sum of consecutive naturals, for example, 277490 + ... + 277539.

It is an arithmetic number, because the mean of its divisors is an integer number (2867655).

Almost surely, 2^13875725 is an apocalyptic number.

It is an amenable number.

13875725 is a deficient number, since it is larger than the sum of its proper divisors (3330205).

13875725 is an equidigital number, since it uses as much as digits as its factorization.

13875725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 555039 (or 555034 counting only the distinct ones).

The product of its digits is 58800, while the sum is 38.

The square root of 13875725 is about 3725.0134227946. The cubic root of 13875725 is about 240.2989619268.

The spelling of 13875725 in words is "thirteen million, eight hundred seventy-five thousand, seven hundred twenty-five".