11944128625 has 32 divisors (see below), whose sum is σ = 17512290432. Its totient is φ = 8018424000.

The previous prime is 11944128611. The next prime is 11944128629. The reversal of 11944128625 is 52682144911.

It is not a de Polignac number, because 11944128625 - 2¹⁵ = 11944095857 is a prime.

It is a super-2 number, since 2×11944128625² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (11944128629) 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 31 ways as a sum of consecutive naturals, for example, 316227 + ... + 351976.

It is an arithmetic number, because the mean of its divisors is an integer number (547259076).

Almost surely, 2^11944128625 is an apocalyptic number.

It is an amenable number.

11944128625 is a deficient number, since it is larger than the sum of its proper divisors (5568161807).

11944128625 is a wasteful number, since it uses less digits than its factorization.

11944128625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 668242 (or 668232 counting only the distinct ones).

The product of its digits is 138240, while the sum is 43.

The spelling of 11944128625 in words is "eleven billion, nine hundred forty-four million, one hundred twenty-eight thousand, six hundred twenty-five".