15925 has 18 divisors (see below), whose sum is σ = 24738. Its totient is φ = 10080.

The previous prime is 15923. The next prime is 15937. The reversal of 15925 is 52951.

It can be written as a sum of positive squares in 3 ways, for example, as 49 + 15876 = 7^2 + 126^2 .

It is not a de Polignac number, because 15925 - 2¹ = 15923 is a prime.

Its product of digits (450) is a multiple of the sum of its prime divisors (25).

It is a nialpdrome in base 7 and base 13.

It is a junction number, because it is equal to n+sod(n) for n = 15896 and 15905.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15923) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 1219 + ... + 1231.

2¹⁵⁹²⁵ is an apocalyptic number.

It is an amenable number.

15925 is a deficient number, since it is larger than the sum of its proper divisors (8813).

15925 is a wasteful number, since it uses less digits than its factorization.

15925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37 (or 25 counting only the distinct ones).

The product of its digits is 450, while the sum is 22.

The square root of 15925 is about 126.1942946412. The cubic root of 15925 is about 25.1589867848.

The spelling of 15925 in words is "fifteen thousand, nine hundred twenty-five".