255136109 has 8 divisors (see below), whose sum is σ = 259680000. Its totient is φ = 250625232.

The previous prime is 255136073. The next prime is 255136121. The reversal of 255136109 is 901631552.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-255136109 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255136159) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7607 + ... + 23835.

It is an arithmetic number, because the mean of its divisors is an integer number (32460000).

Almost surely, 2^255136109 is an apocalyptic number.

It is an amenable number.

255136109 is a deficient number, since it is larger than the sum of its proper divisors (4543891).

255136109 is a wasteful number, since it uses less digits than its factorization.

255136109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16507.

The product of its (nonzero) digits is 8100, while the sum is 32.

The square root of 255136109 is about 15972.9805922376. The cubic root of 255136109 is about 634.2453755033.

The spelling of 255136109 in words is "two hundred fifty-five million, one hundred thirty-six thousand, one hundred nine".