1155321125 has 32 divisors (see below), whose sum is σ = 1734570240. Its totient is φ = 750513600.

The previous prime is 1155321109. The next prime is 1155321179. The reversal of 1155321125 is 5211235511.

It is not a de Polignac number, because 1155321125 - 2⁴ = 1155321109 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1155321094 and 1155321103.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 18122 + ... + 51371.

It is an arithmetic number, because the mean of its divisors is an integer number (54205320).

Almost surely, 2^1155321125 is an apocalyptic number.

It is an amenable number.

1155321125 is a deficient number, since it is larger than the sum of its proper divisors (579249115).

1155321125 is an equidigital number, since it uses as much as digits as its factorization.

1155321125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69534 (or 69524 counting only the distinct ones).

The product of its digits is 1500, while the sum is 26.

The square root of 1155321125 is about 33990.0150779608. The cubic root of 1155321125 is about 1049.3029765495.

Adding to 1155321125 its reverse (5211235511), we get a palindrome (6366556636).

The spelling of 1155321125 in words is "one billion, one hundred fifty-five million, three hundred twenty-one thousand, one hundred twenty-five".