135775025 has 12 divisors (see below), whose sum is σ = 168639132. Its totient is φ = 108440640.

The previous prime is 135775001. The next prime is 135775027. The reversal of 135775025 is 520577531.

It can be written as a sum of positive squares in 6 ways, for example, as 262144 + 135512881 = 512^2 + 11641^2 .

It is a de Polignac number, because none of the positive numbers 2^k-135775025 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (135775027) 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, 12167 + ... + 20483.

It is an arithmetic number, because the mean of its divisors is an integer number (14053261).

Almost surely, 2^135775025 is an apocalyptic number.

It is an amenable number.

135775025 is a deficient number, since it is larger than the sum of its proper divisors (32864107).

135775025 is an equidigital number, since it uses as much as digits as its factorization.

135775025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8980 (or 8975 counting only the distinct ones).

The product of its (nonzero) digits is 36750, while the sum is 35.

The square root of 135775025 is about 11652.2540737833. The cubic root of 135775025 is about 513.9725959035.

The spelling of 135775025 in words is "one hundred thirty-five million, seven hundred seventy-five thousand, twenty-five".