1125143541 has 10 divisors (see below), whose sum is σ = 1680770102. Its totient is φ = 750095640.

The previous prime is 1125143533. The next prime is 1125143563. The reversal of 1125143541 is 1453415211.

1125143541 is a `hidden beast` number, since 112 + 5 + 1 + 4 + 3 + 541 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1105296516 + 19847025 = 33246^2 + 4455^2 .

It is not a de Polignac number, because 1125143541 - 2³ = 1125143533 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1125143531) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 6945250 + ... + 6945411.

Almost surely, 2^1125143541 is an apocalyptic number.

It is an amenable number.

1125143541 is a deficient number, since it is larger than the sum of its proper divisors (555626561).

1125143541 is an equidigital number, since it uses as much as digits as its factorization.

1125143541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13890673 (or 13890664 counting only the distinct ones).

The product of its digits is 2400, while the sum is 27.

The square root of 1125143541 is about 33543.1593771368. The cubic root of 1125143541 is about 1040.0861433207.

Adding to 1125143541 its reverse (1453415211), we get a palindrome (2578558752).

The spelling of 1125143541 in words is "one billion, one hundred twenty-five million, one hundred forty-three thousand, five hundred forty-one".