15725 has 12 divisors (see below), whose sum is σ = 21204. Its totient is φ = 11520.

The previous prime is 15683. The next prime is 15727. The reversal of 15725 is 52751.

15725 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 6 ways, for example, as 841 + 14884 = 29^2 + 122^2 .

It is not a de Polignac number, because 15725 - 2⁶ = 15661 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 15697 and 15706.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15727) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 407 + ... + 443.

It is an arithmetic number, because the mean of its divisors is an integer number (1767).

2¹⁵⁷²⁵ is an apocalyptic number.

It is an amenable number.

15725 is a deficient number, since it is larger than the sum of its proper divisors (5479).

15725 is a wasteful number, since it uses less digits than its factorization.

15725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64 (or 59 counting only the distinct ones).

The product of its digits is 350, while the sum is 20.

The square root of 15725 is about 125.3993620398. The cubic root of 15725 is about 25.0532199584.

The spelling of 15725 in words is "fifteen thousand, seven hundred twenty-five".