1131552231225 has 24 divisors (see below), whose sum is σ = 2014743256512. Its totient is φ = 557071867200.

The previous prime is 1131552231211. The next prime is 1131552231233. The reversal of 1131552231225 is 5221322551311.

It is not a de Polignac number, because 1131552231225 - 2²⁰ = 1131551182649 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 580282221 + ... + 580284170.

It is an arithmetic number, because the mean of its divisors is an integer number (83947635688).

Almost surely, 2^{1131552231225} is an apocalyptic number.

1131552231225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1131552231225 is a deficient number, since it is larger than the sum of its proper divisors (883191025287).

1131552231225 is a wasteful number, since it uses less digits than its factorization.

1131552231225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1160566417 (or 1160566412 counting only the distinct ones).

The product of its digits is 18000, while the sum is 33.

Adding to 1131552231225 its reverse (5221322551311), we get a palindrome (6352874782536).

The spelling of 1131552231225 in words is "one trillion, one hundred thirty-one billion, five hundred fifty-two million, two hundred thirty-one thousand, two hundred twenty-five".