11512531025 has 6 divisors (see below), whose sum is σ = 14275538502. Its totient is φ = 9210024800.

The previous prime is 11512531013. The next prime is 11512531073. The reversal of 11512531025 is 52013521511.

It can be written as a sum of positive squares in 3 ways, for example, as 2047381504 + 9465149521 = 45248^2 + 97289^2 .

It is not a de Polignac number, because 11512531025 - 2⁶ = 11512530961 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11512530985 and 11512531003.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 230250596 + ... + 230250645.

It is an arithmetic number, because the mean of its divisors is an integer number (2379256417).

Almost surely, 2^11512531025 is an apocalyptic number.

It is an amenable number.

11512531025 is a deficient number, since it is larger than the sum of its proper divisors (2763007477).

11512531025 is an equidigital number, since it uses as much as digits as its factorization.

11512531025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 460501251 (or 460501246 counting only the distinct ones).

The product of its (nonzero) digits is 1500, while the sum is 26.

The spelling of 11512531025 in words is "eleven billion, five hundred twelve million, five hundred thirty-one thousand, twenty-five".