11636631325 has 24 divisors (see below), whose sum is σ = 16667147520. Its totient is φ = 7965177600.

The previous prime is 11636631323. The next prime is 11636631343. The reversal of 11636631325 is 52313663611.

It is a happy number.

It is not a de Polignac number, because 11636631325 - 2¹ = 11636631323 is a prime.

It is a super-2 number, since 2×11636631325² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11636631323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1239885 + ... + 1249234.

It is an arithmetic number, because the mean of its divisors is an integer number (694464480).

Almost surely, 2^11636631325 is an apocalyptic number.

It is an amenable number.

11636631325 is a deficient number, since it is larger than the sum of its proper divisors (5030516195).

11636631325 is a wasteful number, since it uses less digits than its factorization.

11636631325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2489157 (or 2489152 counting only the distinct ones).

The product of its digits is 58320, while the sum is 37.

The spelling of 11636631325 in words is "eleven billion, six hundred thirty-six million, six hundred thirty-one thousand, three hundred twenty-five".