155425 has 6 divisors (see below), whose sum is σ = 192758. Its totient is φ = 124320.

The previous prime is 155423. The next prime is 155443. The reversal of 155425 is 524551.

155425 is digitally balanced in base 2, 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 20736 + 134689 = 144^2 + 367^2 .

It is not a de Polignac number, because 155425 - 2¹ = 155423 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 155396 and 155405.

It is not an unprimeable number, because it can be changed into a prime (155423) 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, 3084 + ... + 3133.

2¹⁵⁵⁴²⁵ is an apocalyptic number.

It is an amenable number.

155425 is a deficient number, since it is larger than the sum of its proper divisors (37333).

155425 is an equidigital number, since it uses as much as digits as its factorization.

155425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6227 (or 6222 counting only the distinct ones).

The product of its digits is 1000, while the sum is 22.

The square root of 155425 is about 394.2397747564. The cubic root of 155425 is about 53.7659047939.

Subtracting from 155425 its sum of digits (22), we obtain a triangular number (155403 = T₅₅₇).

Adding to 155425 its reverse (524551), we get a palindrome (679976).

The spelling of 155425 in words is "one hundred fifty-five thousand, four hundred twenty-five".