13938125 has 20 divisors (see below), whose sum is σ = 18041100. Its totient is φ = 10752000.

The previous prime is 13938121. The next prime is 13938137. The reversal of 13938125 is 52183931.

It can be written as a sum of positive squares in 10 ways, for example, as 11202409 + 2735716 = 3347^2 + 1654^2 .

It is not a de Polignac number, because 13938125 - 2² = 13938121 is a prime.

It is a super-3 number, since 3×13938125³ (a number of 22 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 13938091 and 13938100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13938121) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 17741 + ... + 18509.

It is an arithmetic number, because the mean of its divisors is an integer number (902055).

Almost surely, 2^13938125 is an apocalyptic number.

It is an amenable number.

13938125 is a deficient number, since it is larger than the sum of its proper divisors (4102975).

13938125 is an frugal number, since it uses more digits than its factorization.

13938125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 818 (or 803 counting only the distinct ones).

The product of its digits is 6480, while the sum is 32.

The square root of 13938125 is about 3733.3798360199. The cubic root of 13938125 is about 240.6586364402.

The spelling of 13938125 in words is "thirteen million, nine hundred thirty-eight thousand, one hundred twenty-five".