1155149125 has 64 divisors (see below), whose sum is σ = 1673957376. Its totient is φ = 788832000.

The previous prime is 1155149123. The next prime is 1155149161. The reversal of 1155149125 is 5219415511.

It is not a de Polignac number, because 1155149125 - 2¹ = 1155149123 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1155149123) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1158127 + ... + 1159123.

It is an arithmetic number, because the mean of its divisors is an integer number (26155584).

Almost surely, 2^1155149125 is an apocalyptic number.

It is an amenable number.

1155149125 is a deficient number, since it is larger than the sum of its proper divisors (518808251).

1155149125 is a wasteful number, since it uses less digits than its factorization.

1155149125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1079 (or 1069 counting only the distinct ones).

The product of its digits is 9000, while the sum is 34.

The square root of 1155149125 is about 33987.4848289779. The cubic root of 1155149125 is about 1049.2509018304.

The spelling of 1155149125 in words is "one billion, one hundred fifty-five million, one hundred forty-nine thousand, one hundred twenty-five".