1125432001 has 4 divisors (see below), whose sum is σ = 1152881604. Its totient is φ = 1097982400.

The previous prime is 1125431981. The next prime is 1125432037. The reversal of 1125432001 is 1002345211.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 588305025 + 537126976 = 24255^2 + 23176^2 .

It is a cyclic number.

It is not a de Polignac number, because 1125432001 - 2¹¹ = 1125429953 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1125432001.

It is not an unprimeable number, because it can be changed into a prime (1125432901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13724740 + ... + 13724821.

It is an arithmetic number, because the mean of its divisors is an integer number (288220401).

Almost surely, 2^1125432001 is an apocalyptic number.

It is an amenable number.

1125432001 is a deficient number, since it is larger than the sum of its proper divisors (27449603).

1125432001 is an equidigital number, since it uses as much as digits as its factorization.

1125432001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27449602.

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 1125432001 is about 33547.4589350669. The cubic root of 1125432001 is about 1040.1750201623.

Adding to 1125432001 its reverse (1002345211), we get a palindrome (2127777212).

The spelling of 1125432001 in words is "one billion, one hundred twenty-five million, four hundred thirty-two thousand, one".