11512231025 has 12 divisors (see below), whose sum is σ = 14293657692. Its totient is φ = 9197855040.

The previous prime is 11512231019. The next prime is 11512231033. The reversal of 11512231025 is 52013221511.

It can be written as a sum of positive squares in 6 ways, for example, as 114746944 + 11397484081 = 10712^2 + 106759^2 .

It is a de Polignac number, because none of the positive numbers 2^k-11512231025 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 278534 + ... + 317183.

It is an arithmetic number, because the mean of its divisors is an integer number (1191138141).

Almost surely, 2^11512231025 is an apocalyptic number.

It is an amenable number.

11512231025 is a deficient number, since it is larger than the sum of its proper divisors (2781426667).

11512231025 is an equidigital number, since it uses as much as digits as its factorization.

11512231025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 596500 (or 596495 counting only the distinct ones).

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

Adding to 11512231025 its reverse (52013221511), we get a palindrome (63525452536).

The spelling of 11512231025 in words is "eleven billion, five hundred twelve million, two hundred thirty-one thousand, twenty-five".