135251205 has 16 divisors (see below), whose sum is σ = 216777600. Its totient is φ = 72008768.

The previous prime is 135251197. The next prime is 135251209. The reversal of 135251205 is 502152531.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 135251205 - 2³ = 135251197 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135251209) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 1459 + ... + 16511.

It is an arithmetic number, because the mean of its divisors is an integer number (13548600).

Almost surely, 2^135251205 is an apocalyptic number.

135251205 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

135251205 is a deficient number, since it is larger than the sum of its proper divisors (81526395).

135251205 is a wasteful number, since it uses less digits than its factorization.

135251205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15660.

The product of its (nonzero) digits is 1500, while the sum is 24.

The square root of 135251205 is about 11629.7551564941. The cubic root of 135251205 is about 513.3107753716.

The spelling of 135251205 in words is "one hundred thirty-five million, two hundred fifty-one thousand, two hundred five".