1125501401320 has 64 divisors (see below), whose sum is σ = 2549865906000. Its totient is φ = 447092797440.

The previous prime is 1125501401317. The next prime is 1125501401333. The reversal of 1125501401320 is 231041055211.

It can be written as a sum of positive squares in 8 ways, for example, as 597748552164 + 527752849156 = 773142^2 + 726466^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37276630 + ... + 37306810.

Almost surely, 2^{1125501401320} is an apocalyptic number.

1125501401320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1125501401320 is an abundant number, since it is smaller than the sum of its proper divisors (1424364504680).

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

1125501401320 is a wasteful number, since it uses less digits than its factorization.

1125501401320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36598 (or 36594 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 25.

Adding to 1125501401320 its reverse (231041055211), we get a palindrome (1356542456531).

The spelling of 1125501401320 in words is "one trillion, one hundred twenty-five billion, five hundred one million, four hundred one thousand, three hundred twenty".