1125451540 has 12 divisors (see below), whose sum is σ = 2363448276. Its totient is φ = 450180608.

The previous prime is 1125451511. The next prime is 1125451541. The reversal of 1125451540 is 451545211.

It can be written as a sum of positive squares in 2 ways, for example, as 602506116 + 522945424 = 24546^2 + 22868^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1125451499 and 1125451508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1125451541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28136269 + ... + 28136308.

It is an arithmetic number, because the mean of its divisors is an integer number (196954023).

Almost surely, 2^1125451540 is an apocalyptic number.

1125451540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1125451540 is an abundant number, since it is smaller than the sum of its proper divisors (1237996736).

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

1125451540 is a wasteful number, since it uses less digits than its factorization.

1125451540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56272586 (or 56272584 counting only the distinct ones).

The product of its (nonzero) digits is 4000, while the sum is 28.

The square root of 1125451540 is about 33547.7501481098. The cubic root of 1125451540 is about 1040.1810397358.

Adding to 1125451540 its reverse (451545211), we get a palindrome (1576996751).

The spelling of 1125451540 in words is "one billion, one hundred twenty-five million, four hundred fifty-one thousand, five hundred forty".