1125232420520 has 32 divisors (see below), whose sum is σ = 2726524712520. Its totient is φ = 415470432000.

The previous prime is 1125232420489. The next prime is 1125232420553. The reversal of 1125232420520 is 250242325211.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 957701018884 + 167531401636 = 978622^2 + 409306^2 .

It is a super-2 number, since 2×1125232420520² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1081953731 + ... + 1081954770.

Almost surely, 2^{1125232420520} is an apocalyptic number.

1125232420520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1125232420520 is an abundant number, since it is smaller than the sum of its proper divisors (1601292292000).

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

1125232420520 is a wasteful number, since it uses less digits than its factorization.

1125232420520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2163908525 (or 2163908521 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 29.

Adding to 1125232420520 its reverse (250242325211), we get a palindrome (1375474745731).

The spelling of 1125232420520 in words is "one trillion, one hundred twenty-five billion, two hundred thirty-two million, four hundred twenty thousand, five hundred twenty".