11500016225 has 6 divisors (see below), whose sum is σ = 14260020150. Its totient is φ = 9200012960.

The previous prime is 11500016221. The next prime is 11500016273. The reversal of 11500016225 is 52261000511.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 1666517329 + 9833498896 = 40823^2 + 99164^2 .

It is not a de Polignac number, because 11500016225 - 2² = 11500016221 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11500016225.

It is not an unprimeable number, because it can be changed into a prime (11500016221) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 230000300 + ... + 230000349.

It is an arithmetic number, because the mean of its divisors is an integer number (2376670025).

Almost surely, 2^11500016225 is an apocalyptic number.

It is an amenable number.

11500016225 is a deficient number, since it is larger than the sum of its proper divisors (2760003925).

11500016225 is an equidigital number, since it uses as much as digits as its factorization.

11500016225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 460000659 (or 460000654 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 23.

Adding to 11500016225 its reverse (52261000511), we get a palindrome (63761016736).

The spelling of 11500016225 in words is "eleven billion, five hundred million, sixteen thousand, two hundred twenty-five".