1145543125 has 20 divisors (see below), whose sum is σ = 1470188764. Its totient is φ = 891648000.

The previous prime is 1145543101. The next prime is 1145543143. The reversal of 1145543125 is 5213455411.

It can be written as a sum of positive squares in 10 ways, for example, as 658281649 + 487261476 = 25657^2 + 22074^2 .

It is not a de Polignac number, because 1145543125 - 2¹¹ = 1145541077 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1644 + ... + 47893.

Almost surely, 2^1145543125 is an apocalyptic number.

It is an amenable number.

1145543125 is a deficient number, since it is larger than the sum of its proper divisors (324645639).

1145543125 is an frugal number, since it uses more digits than its factorization.

1145543125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49594 (or 49579 counting only the distinct ones).

The product of its digits is 12000, while the sum is 31.

The square root of 1145543125 is about 33845.8730866852. The cubic root of 1145543125 is about 1046.3343454671.

Adding to 1145543125 its reverse (5213455411), we get a palindrome (6358998536).

The spelling of 1145543125 in words is "one billion, one hundred forty-five million, five hundred forty-three thousand, one hundred twenty-five".