13856725 has 6 divisors (see below), whose sum is σ = 17182370. Its totient is φ = 11085360.

The previous prime is 13856723. The next prime is 13856737. The reversal of 13856725 is 52765831.

It can be written as a sum of positive squares in 3 ways, for example, as 248004 + 13608721 = 498^2 + 3689^2 .

It is not a de Polignac number, because 13856725 - 2¹ = 13856723 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13856723) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 277110 + ... + 277159.

Almost surely, 2^13856725 is an apocalyptic number.

It is an amenable number.

13856725 is a deficient number, since it is larger than the sum of its proper divisors (3325645).

13856725 is an equidigital number, since it uses as much as digits as its factorization.

13856725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 554279 (or 554274 counting only the distinct ones).

The product of its digits is 50400, while the sum is 37.

The square root of 13856725 is about 3722.4622227767. The cubic root of 13856725 is about 240.1892315454.

The spelling of 13856725 in words is "thirteen million, eight hundred fifty-six thousand, seven hundred twenty-five".