11856305225 has 12 divisors (see below), whose sum is σ = 14734575900. Its totient is φ = 9463910400.

The previous prime is 11856305221. The next prime is 11856305249. The reversal of 11856305225 is 52250365811.

It can be written as a sum of positive squares in 6 ways, for example, as 111598096 + 11744707129 = 10564^2 + 108373^2 .

It is not a de Polignac number, because 11856305225 - 2² = 11856305221 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11856305221) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 516896 + ... + 539345.

It is an arithmetic number, because the mean of its divisors is an integer number (1227881325).

Almost surely, 2^11856305225 is an apocalyptic number.

It is an amenable number.

11856305225 is a deficient number, since it is larger than the sum of its proper divisors (2878270675).

11856305225 is a wasteful number, since it uses less digits than its factorization.

11856305225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1056700 (or 1056695 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 38.

The spelling of 11856305225 in words is "eleven billion, eight hundred fifty-six million, three hundred five thousand, two hundred twenty-five".