1125452280 has 32 divisors (see below), whose sum is σ = 3376357200. Its totient is φ = 300120576.

The previous prime is 1125452269. The next prime is 1125452291. The reversal of 1125452280 is 822545211.

It is an interprime number because it is at equal distance from previous prime (1125452269) and next prime (1125452291).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

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, 4689265 + ... + 4689504.

Almost surely, 2^1125452280 is an apocalyptic number.

1125452280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1125452280 is an abundant number, since it is smaller than the sum of its proper divisors (2250904920).

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

1125452280 is a wasteful number, since it uses less digits than its factorization.

1125452280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9378783 (or 9378779 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 30.

The square root of 1125452280 is about 33547.7611771635. The cubic root of 1125452280 is about 1040.1812677136.

Adding to 1125452280 its reverse (822545211), we get a palindrome (1947997491).

The spelling of 1125452280 in words is "one billion, one hundred twenty-five million, four hundred fifty-two thousand, two hundred eighty".