1125299620 has 24 divisors (see below), whose sum is σ = 2366732088. Its totient is φ = 449433600.

The previous prime is 1125299579. The next prime is 1125299627. The reversal of 1125299620 is 269925211.

It can be written as a sum of positive squares in 4 ways, for example, as 504990784 + 620308836 = 22472^2 + 24906^2 .

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 1125299620.

It is not an unprimeable number, because it can be changed into a prime (1125299627) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29341 + ... + 55780.

It is an arithmetic number, because the mean of its divisors is an integer number (98613837).

Almost surely, 2^1125299620 is an apocalyptic number.

1125299620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1125299620 is an abundant number, since it is smaller than the sum of its proper divisors (1241432468).

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

1125299620 is a wasteful number, since it uses less digits than its factorization.

1125299620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85791 (or 85789 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 37.

The square root of 1125299620 is about 33545.4858363983. The cubic root of 1125299620 is about 1040.1342343993.

The spelling of 1125299620 in words is "one billion, one hundred twenty-five million, two hundred ninety-nine thousand, six hundred twenty".