135631525256005 has 4 divisors (see below), whose sum is σ = 162757830307212. Its totient is φ = 108505220204800.

The previous prime is 135631525255951. The next prime is 135631525256033. The reversal of 135631525256005 is 500652525136531.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 21212711987076 + 114418813268929 = 4605726^2 + 10696673^2 .

It is not a de Polignac number, because 135631525256005 - 2¹¹ = 135631525253957 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 135631525256005.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13563152525596 + ... + 13563152525605.

It is an arithmetic number, because the mean of its divisors is an integer number (40689457576803).

Almost surely, 2^{135631525256005} is an apocalyptic number.

It is an amenable number.

135631525256005 is a deficient number, since it is larger than the sum of its proper divisors (27126305051207).

135631525256005 is an equidigital number, since it uses as much as digits as its factorization.

135631525256005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27126305051206.

The product of its (nonzero) digits is 4050000, while the sum is 49.

The spelling of 135631525256005 in words is "one hundred thirty-five trillion, six hundred thirty-one billion, five hundred twenty-five million, two hundred fifty-six thousand, five".