1125320544 has 36 divisors (see below), whose sum is σ = 3200131116. Its totient is φ = 375106752.

The previous prime is 1125320531. The next prime is 1125320549. The reversal of 1125320544 is 4450235211.

1125320544 is a `hidden beast` number, since 112 + 5 + 3 + 2 + 0 + 544 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1125320549) 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 5 ways as a sum of consecutive naturals, for example, 1953394 + ... + 1953969.

It is an arithmetic number, because the mean of its divisors is an integer number (88892531).

Almost surely, 2^1125320544 is an apocalyptic number.

It is an amenable number.

1125320544 is an abundant number, since it is smaller than the sum of its proper divisors (2074810572).

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

1125320544 is a wasteful number, since it uses less digits than its factorization.

1125320544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3907379 (or 3907368 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

The square root of 1125320544 is about 33545.7977099964. The cubic root of 1125320544 is about 1040.1406811664.

Adding to 1125320544 its reverse (4450235211), we get a palindrome (5575555755).

The spelling of 1125320544 in words is "one billion, one hundred twenty-five million, three hundred twenty thousand, five hundred forty-four".