1125201441 has 32 divisors (see below), whose sum is σ = 1863473920. Its totient is φ = 588052224.

The previous prime is 1125201433. The next prime is 1125201461. The reversal of 1125201441 is 1441025211.

It is not a de Polignac number, because 1125201441 - 2³ = 1125201433 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (1125201401) 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 31 ways as a sum of consecutive naturals, for example, 10851 + ... + 48663.

It is an arithmetic number, because the mean of its divisors is an integer number (58233560).

Almost surely, 2^1125201441 is an apocalyptic number.

It is an amenable number.

1125201441 is a deficient number, since it is larger than the sum of its proper divisors (738272479).

1125201441 is a wasteful number, since it uses less digits than its factorization.

1125201441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37945.

The product of its (nonzero) digits is 320, while the sum is 21.

The square root of 1125201441 is about 33544.0224332145. The cubic root of 1125201441 is about 1040.1039839939.

Adding to 1125201441 its reverse (1441025211), we get a palindrome (2566226652).

It can be divided in two parts, 1125 and 201441, that added together give a triangular number (202566 = T₆₃₆).

The spelling of 1125201441 in words is "one billion, one hundred twenty-five million, two hundred one thousand, four hundred forty-one".