1125181316 has 48 divisors (see below), whose sum is σ = 2345280000. Its totient is φ = 471933504.

The previous prime is 1125181313. The next prime is 1125181319. The reversal of 1125181316 is 6131815211.

It is an interprime number because it is at equal distance from previous prime (1125181313) and next prime (1125181319).

It is not an unprimeable number, because it can be changed into a prime (1125181313) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 55760 + ... + 73208.

It is an arithmetic number, because the mean of its divisors is an integer number (48860000).

Almost surely, 2^1125181316 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1125181316, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1172640000).

1125181316 is an abundant number, since it is smaller than the sum of its proper divisors (1220098684).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1125181316 is a wasteful number, since it uses less digits than its factorization.

1125181316 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17521 (or 17505 counting only the distinct ones).

The product of its digits is 1440, while the sum is 29.

The square root of 1125181316 is about 33543.7224529419. The cubic root of 1125181316 is about 1040.0977829657.

Adding to 1125181316 its reverse (6131815211), we get a palindrome (7256996527).

The spelling of 1125181316 in words is "one billion, one hundred twenty-five million, one hundred eighty-one thousand, three hundred sixteen".