1125535520 has 48 divisors (see below), whose sum is σ = 2661475320. Its totient is φ = 449808384.

The previous prime is 1125535513. The next prime is 1125535529. The reversal of 1125535520 is 255355211.

It can be written as a sum of positive squares in 4 ways, for example, as 1120642576 + 4892944 = 33476^2 + 2212^2 .

It is not an unprimeable number, because it can be changed into a prime (1125535529) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 226826 + ... + 231734.

Almost surely, 2^1125535520 is an apocalyptic number.

1125535520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1125535520 is an abundant number, since it is smaller than the sum of its proper divisors (1535939800).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1125535520 is a wasteful number, since it uses less digits than its factorization.

1125535520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6357 (or 6349 counting only the distinct ones).

The product of its (nonzero) digits is 7500, while the sum is 29.

The square root of 1125535520 is about 33549.0017735252. The cubic root of 1125535520 is about 1040.2069114943.

It can be divided in two parts, 1 and 125535520, that added together give a palindrome (125535521).

The spelling of 1125535520 in words is "one billion, one hundred twenty-five million, five hundred thirty-five thousand, five hundred twenty".