15425 has 6 divisors (see below), whose sum is σ = 19158. Its totient is φ = 12320.

The previous prime is 15413. The next prime is 15427. The reversal of 15425 is 52451.

15425 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 3 ways, for example, as 49 + 15376 = 7^2 + 124^2 .

It is not a de Polignac number, because 15425 - 2⁶ = 15361 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a plaindrome in base 14.

It is a nialpdrome in base 5.

It is not an unprimeable number, because it can be changed into a prime (15427) 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, 284 + ... + 333.

It is an arithmetic number, because the mean of its divisors is an integer number (3193).

2¹⁵⁴²⁵ is an apocalyptic number.

It is an amenable number.

15425 is a deficient number, since it is larger than the sum of its proper divisors (3733).

15425 is an equidigital number, since it uses as much as digits as its factorization.

15425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 627 (or 622 counting only the distinct ones).

The product of its digits is 200, while the sum is 17.

The square root of 15425 is about 124.1974234837. The cubic root of 15425 is about 24.8928749580.

Adding to 15425 its product of digits (200), we get a 6-th power (15625 = 5⁶).

Subtracting from 15425 its product of digits (200), we obtain a triangular number (15225 = T₁₇₄).

Adding to 15425 its reverse (52451), we get a palindrome (67876).

The spelling of 15425 in words is "fifteen thousand, four hundred twenty-five".