135168725 has 6 divisors (see below), whose sum is σ = 167609250. Its totient is φ = 108134960.

The previous prime is 135168703. The next prime is 135168749. The reversal of 135168725 is 527861531.

It can be written as a sum of positive squares in 3 ways, for example, as 36881329 + 98287396 = 6073^2 + 9914^2 .

It is not a de Polignac number, because 135168725 - 2¹⁰ = 135167701 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2703350 + ... + 2703399.

It is an arithmetic number, because the mean of its divisors is an integer number (27934875).

Almost surely, 2^135168725 is an apocalyptic number.

It is an amenable number.

135168725 is a deficient number, since it is larger than the sum of its proper divisors (32440525).

135168725 is an equidigital number, since it uses as much as digits as its factorization.

135168725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5406759 (or 5406754 counting only the distinct ones).

The product of its digits is 50400, while the sum is 38.

The square root of 135168725 is about 11626.2085393304. The cubic root of 135168725 is about 513.2064103570.

It can be divided in two parts, 135 and 168725, that multiplied together give a triangular number (22777875 = T₆₇₄₉).

The spelling of 135168725 in words is "one hundred thirty-five million, one hundred sixty-eight thousand, seven hundred twenty-five".