1125253320 has 128 divisors (see below), whose sum is σ = 3476183040. Its totient is φ = 291249920.

The previous prime is 1125253319. The next prime is 1125253343. The reversal of 1125253320 is 233525211.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 738079 + ... + 739601.

It is an arithmetic number, because the mean of its divisors is an integer number (27157680).

Almost surely, 2^1125253320 is an apocalyptic number.

1125253320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1125253320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1738091520).

1125253320 is an abundant number, since it is smaller than the sum of its proper divisors (2350929720).

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

1125253320 is a wasteful number, since it uses less digits than its factorization.

1125253320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1715 (or 1711 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 24.

The square root of 1125253320 is about 33544.7957215423. The cubic root of 1125253320 is about 1040.1199689021.

Adding to 1125253320 its reverse (233525211), we get a palindrome (1358778531).

The spelling of 1125253320 in words is "one billion, one hundred twenty-five million, two hundred fifty-three thousand, three hundred twenty".