1125385272 has 64 divisors (see below), whose sum is σ = 3410265600. Its totient is φ = 341025120.

The previous prime is 1125385253. The next prime is 1125385273. The reversal of 1125385272 is 2725835211.

1125385272 is a `hidden beast` number, since 1 + 1 + 2 + 5 + 385 + 272 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1125385273) 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, 234448 + ... + 239199.

It is an arithmetic number, because the mean of its divisors is an integer number (53285400).

Almost surely, 2^1125385272 is an apocalyptic number.

1125385272 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1125385272 is an abundant number, since it is smaller than the sum of its proper divisors (2284880328).

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

1125385272 is a wasteful number, since it uses less digits than its factorization.

1125385272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 473673 (or 473663 counting only the distinct ones).

The product of its digits is 33600, while the sum is 36.

The square root of 1125385272 is about 33546.7624667419. The cubic root of 1125385272 is about 1040.1606236132.

The spelling of 1125385272 in words is "one billion, one hundred twenty-five million, three hundred eighty-five thousand, two hundred seventy-two".