1125585616 has 20 divisors (see below), whose sum is σ = 2184064452. Its totient is φ = 561956096.

The previous prime is 1125585583. The next prime is 1125585641. The reversal of 1125585616 is 6165855211.

It can be written as a sum of positive squares in 2 ways, for example, as 761539216 + 364046400 = 27596^2 + 19080^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41125 + ... + 62788.

Almost surely, 2^1125585616 is an apocalyptic number.

1125585616 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1125585616 is a deficient number, since it is larger than the sum of its proper divisors (1058478836).

1125585616 is a wasteful number, since it uses less digits than its factorization.

1125585616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104598 (or 104592 counting only the distinct ones).

The product of its digits is 72000, while the sum is 40.

The square root of 1125585616 is about 33549.7483746153. The cubic root of 1125585616 is about 1040.2223439799. Note that the first 3 decimals are identical.

The spelling of 1125585616 in words is "one billion, one hundred twenty-five million, five hundred eighty-five thousand, six hundred sixteen".