13604725 has 12 divisors (see below), whose sum is σ = 16917444. Its totient is φ = 10853120.

The previous prime is 13604713. The next prime is 13604737. The reversal of 13604725 is 52740631.

It is an interprime number because it is at equal distance from previous prime (13604713) and next prime (13604737).

It can be written as a sum of positive squares in 6 ways, for example, as 194481 + 13410244 = 441^2 + 3662^2 .

It is not a de Polignac number, because 13604725 - 2¹⁹ = 13080437 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13604693 and 13604702.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13437 + ... + 14413.

It is an arithmetic number, because the mean of its divisors is an integer number (1409787).

Almost surely, 2^13604725 is an apocalyptic number.

It is an amenable number.

13604725 is a deficient number, since it is larger than the sum of its proper divisors (3312719).

13604725 is an equidigital number, since it uses as much as digits as its factorization.

13604725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1544 (or 1539 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 28.

The square root of 13604725 is about 3688.4583500427. The cubic root of 13604725 is about 238.7242783616.

The spelling of 13604725 in words is "thirteen million, six hundred four thousand, seven hundred twenty-five".