13811725 has 6 divisors (see below), whose sum is σ = 17126570. Its totient is φ = 11049360.

The previous prime is 13811719. The next prime is 13811737. The reversal of 13811725 is 52711831.

It can be written as a sum of positive squares in 3 ways, for example, as 1687401 + 12124324 = 1299^2 + 3482^2 .

It is not a de Polignac number, because 13811725 - 2¹⁵ = 13778957 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13811693 and 13811702.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 276210 + ... + 276259.

Almost surely, 2^13811725 is an apocalyptic number.

It is an amenable number.

13811725 is a deficient number, since it is larger than the sum of its proper divisors (3314845).

13811725 is an equidigital number, since it uses as much as digits as its factorization.

13811725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 552479 (or 552474 counting only the distinct ones).

The product of its digits is 1680, while the sum is 28.

The square root of 13811725 is about 3716.4129210840. The cubic root of 13811725 is about 239.9289430846.

The spelling of 13811725 in words is "thirteen million, eight hundred eleven thousand, seven hundred twenty-five".