1121136525 has 24 divisors (see below), whose sum is σ = 2059570560. Its totient is φ = 597939120.

The previous prime is 1121136521. The next prime is 1121136551. The reversal of 1121136525 is 5256311211.

1121136525 is a `hidden beast` number, since 1 + 1 + 2 + 1 + 1 + 3 + 652 + 5 = 666.

It is not a de Polignac number, because 1121136525 - 2² = 1121136521 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1121136521) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 829797 + ... + 831146.

It is an arithmetic number, because the mean of its divisors is an integer number (85815440).

Almost surely, 2^1121136525 is an apocalyptic number.

1121136525 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1121136525 is a deficient number, since it is larger than the sum of its proper divisors (938434035).

1121136525 is a wasteful number, since it uses less digits than its factorization.

1121136525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1660962 (or 1660951 counting only the distinct ones).

The product of its digits is 1800, while the sum is 27.

The square root of 1121136525 is about 33483.3768458320. The cubic root of 1121136525 is about 1038.8499753897.

Adding to 1121136525 its reverse (5256311211), we get a palindrome (6377447736).

The spelling of 1121136525 in words is "one billion, one hundred twenty-one million, one hundred thirty-six thousand, five hundred twenty-five".