1251116332 has 48 divisors (see below), whose sum is σ = 2345293440. Its totient is φ = 582291072.

The previous prime is 1251116329. The next prime is 1251116333. The reversal of 1251116332 is 2336111521.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1251116297 and 1251116306.

It is not an unprimeable number, because it can be changed into a prime (1251116333) 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, 1113523 + ... + 1114645.

It is an arithmetic number, because the mean of its divisors is an integer number (48860280).

Almost surely, 2^1251116332 is an apocalyptic number.

It is an amenable number.

1251116332 is a deficient number, since it is larger than the sum of its proper divisors (1094177108).

1251116332 is a wasteful number, since it uses less digits than its factorization.

1251116332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1390 (or 1388 counting only the distinct ones).

The product of its digits is 1080, while the sum is 25.

The square root of 1251116332 is about 35371.1228546678. The cubic root of 1251116332 is about 1077.5379248535.

Adding to 1251116332 its reverse (2336111521), we get a palindrome (3587227853).

The spelling of 1251116332 in words is "one billion, two hundred fifty-one million, one hundred sixteen thousand, three hundred thirty-two".