135425 has 6 divisors (see below), whose sum is σ = 167958. Its totient is φ = 108320.

The previous prime is 135409. The next prime is 135427. The reversal of 135425 is 524531.

It is a Cunningham number, because it is equal to 368²+1.

It can be written as a sum of positive squares in 3 ways, for example, as 1 + 135424 = 1^2 + 368^2 .

It is not a de Polignac number, because 135425 - 2⁴ = 135409 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 135397 and 135406.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 135425.

It is not an unprimeable number, because it can be changed into a prime (135427) 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, 2684 + ... + 2733.

It is an arithmetic number, because the mean of its divisors is an integer number (27993).

2¹³⁵⁴²⁵ is an apocalyptic number.

It is an amenable number.

135425 is a deficient number, since it is larger than the sum of its proper divisors (32533).

135425 is an equidigital number, since it uses as much as digits as its factorization.

135425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5427 (or 5422 counting only the distinct ones).

The product of its digits is 600, while the sum is 20.

The square root of 135425 is about 368.0013586931. The cubic root of 135425 is about 51.3530545840.

Adding to 135425 its reverse (524531), we get a palindrome (659956).

It can be divided in two parts, 135 and 425, that multiplied together give a palindrome (57375).

The spelling of 135425 in words is "one hundred thirty-five thousand, four hundred twenty-five".