1125673521 has 32 divisors (see below), whose sum is σ = 1826457600. Its totient is φ = 615262032.

The previous prime is 1125673501. The next prime is 1125673537. The reversal of 1125673521 is 1253765211.

It is not a de Polignac number, because 1125673521 - 2⁵ = 1125673489 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1125673501) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 115 + ... + 47448.

It is an arithmetic number, because the mean of its divisors is an integer number (57076800).

Almost surely, 2^1125673521 is an apocalyptic number.

It is an amenable number.

1125673521 is a deficient number, since it is larger than the sum of its proper divisors (700784079).

1125673521 is an equidigital number, since it uses as much as digits as its factorization.

1125673521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47610 (or 47596 counting only the distinct ones).

The product of its digits is 12600, while the sum is 33.

The square root of 1125673521 is about 33551.0584184762. The cubic root of 1125673521 is about 1040.2494227330.

The spelling of 1125673521 in words is "one billion, one hundred twenty-five million, six hundred seventy-three thousand, five hundred twenty-one".