11531053125 has 36 divisors (see below), whose sum is σ = 20818675332. Its totient is φ = 6149880000.

The previous prime is 11531053099. The next prime is 11531053139. The reversal of 11531053125 is 52135013511.

11531053125 is a `hidden beast` number, since 1 + 1 + 531 + 0 + 5 + 3 + 125 = 666.

It can be written as a sum of positive squares in 6 ways, for example, as 11471052609 + 60000516 = 107103^2 + 7746^2 .

It is not a de Polignac number, because 11531053125 - 2²¹ = 11528955973 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 176872 + ... + 233121.

It is an arithmetic number, because the mean of its divisors is an integer number (578296537).

Almost surely, 2^11531053125 is an apocalyptic number.

11531053125 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11531053125 is a deficient number, since it is larger than the sum of its proper divisors (9287622207).

11531053125 is an frugal number, since it uses more digits than its factorization.

11531053125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 410024 (or 410001 counting only the distinct ones).

The product of its (nonzero) digits is 2250, while the sum is 27.

Adding to 11531053125 its reverse (52135013511), we get a palindrome (63666066636).

The spelling of 11531053125 in words is "eleven billion, five hundred thirty-one million, fifty-three thousand, one hundred twenty-five".