135249425 has 6 divisors (see below), whose sum is σ = 167709318. Its totient is φ = 108199520.

The previous prime is 135249421. The next prime is 135249431. The reversal of 135249425 is 524942531.

It can be written as a sum of positive squares in 3 ways, for example, as 410881 + 134838544 = 641^2 + 11612^2 .

It is not a de Polignac number, because 135249425 - 2² = 135249421 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (135249421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2704964 + ... + 2705013.

It is an arithmetic number, because the mean of its divisors is an integer number (27951553).

Almost surely, 2^135249425 is an apocalyptic number.

It is an amenable number.

135249425 is a deficient number, since it is larger than the sum of its proper divisors (32459893).

135249425 is an equidigital number, since it uses as much as digits as its factorization.

135249425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5409987 (or 5409982 counting only the distinct ones).

The product of its digits is 43200, while the sum is 35.

The square root of 135249425 is about 11629.6786284059. The cubic root of 135249425 is about 513.3085235194.

The spelling of 135249425 in words is "one hundred thirty-five million, two hundred forty-nine thousand, four hundred twenty-five".