135613025 has 12 divisors (see below), whose sum is σ = 170672112. Its totient is φ = 106869840.

The previous prime is 135613021. The next prime is 135613039. The reversal of 135613025 is 520316531.

It is not a de Polignac number, because 135613025 - 2² = 135613021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 135612985 and 135613003.

It is not an unprimeable number, because it can be changed into a prime (135613021) 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, 38807 + ... + 42156.

It is an arithmetic number, because the mean of its divisors is an integer number (14222676).

Almost surely, 2^135613025 is an apocalyptic number.

It is an amenable number.

135613025 is a deficient number, since it is larger than the sum of its proper divisors (35059087).

135613025 is an equidigital number, since it uses as much as digits as its factorization.

135613025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81040 (or 81035 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 26.

The square root of 135613025 is about 11645.3005543009. The cubic root of 135613025 is about 513.7680990461.

Adding to 135613025 its reverse (520316531), we get a palindrome (655929556).

The spelling of 135613025 in words is "one hundred thirty-five million, six hundred thirteen thousand, twenty-five".