1133225561 has 8 divisors (see below), whose sum is σ = 1222208904. Its totient is φ = 1044501120.

The previous prime is 1133225549. The next prime is 1133225563. The reversal of 1133225561 is 1655223311.

It can be written as a sum of positive squares in 4 ways, for example, as 604225561 + 529000000 = 24581^2 + 23000^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1133225561 - 2²⁶ = 1066116697 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1133225563) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55580 + ... + 73181.

It is an arithmetic number, because the mean of its divisors is an integer number (152776113).

Almost surely, 2^1133225561 is an apocalyptic number.

It is an amenable number.

1133225561 is a deficient number, since it is larger than the sum of its proper divisors (88983343).

1133225561 is a wasteful number, since it uses less digits than its factorization.

1133225561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129451.

The product of its digits is 5400, while the sum is 29.

The square root of 1133225561 is about 33663.4157654864. The cubic root of 1133225561 is about 1042.5705522280.

Adding to 1133225561 its reverse (1655223311), we get a palindrome (2788448872).

The spelling of 1133225561 in words is "one billion, one hundred thirty-three million, two hundred twenty-five thousand, five hundred sixty-one".