136256005 has 16 divisors (see below), whose sum is σ = 171560448. Its totient is φ = 103752000.

The previous prime is 136255991. The next prime is 136256009. The reversal of 136256005 is 500652631.

It is a de Polignac number, because none of the positive numbers 2^k-136256005 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136256009) 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, 2250 + ... + 16660.

It is an arithmetic number, because the mean of its divisors is an integer number (10722528).

Almost surely, 2^136256005 is an apocalyptic number.

It is an amenable number.

136256005 is a deficient number, since it is larger than the sum of its proper divisors (35304443).

136256005 is a wasteful number, since it uses less digits than its factorization.

136256005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14508.

The product of its (nonzero) digits is 5400, while the sum is 28.

The square root of 136256005 is about 11672.8747530332. The cubic root of 136256005 is about 514.5787928083.

The spelling of 136256005 in words is "one hundred thirty-six million, two hundred fifty-six thousand, five".