1125525321 has 32 divisors (see below), whose sum is σ = 1682208000. Its totient is φ = 743745024.

The previous prime is 1125525319. The next prime is 1125525413. The reversal of 1125525321 is 1235255211.

1125525321 is a `hidden beast` number, since 1 + 125 + 5 + 2 + 532 + 1 = 666.

It is not a de Polignac number, because 1125525321 - 2¹ = 1125525319 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (1125525421) 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 31 ways as a sum of consecutive naturals, for example, 2563620 + ... + 2564058.

It is an arithmetic number, because the mean of its divisors is an integer number (52569000).

Almost surely, 2^1125525321 is an apocalyptic number.

It is an amenable number.

1125525321 is a deficient number, since it is larger than the sum of its proper divisors (556682679).

1125525321 is a wasteful number, since it uses less digits than its factorization.

1125525321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1070 (or 1064 counting only the distinct ones).

The product of its digits is 3000, while the sum is 27.

The square root of 1125525321 is about 33548.8497716390. The cubic root of 1125525321 is about 1040.2037695521.

The spelling of 1125525321 in words is "one billion, one hundred twenty-five million, five hundred twenty-five thousand, three hundred twenty-one".