1232557985 has 16 divisors (see below), whose sum is σ = 1530946560. Its totient is φ = 951635520.

The previous prime is 1232557979. The next prime is 1232558011. The reversal of 1232557985 is 5897552321.

It is not a de Polignac number, because 1232557985 - 2⁴ = 1232557969 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 47156 + ... + 68474.

It is an arithmetic number, because the mean of its divisors is an integer number (95684160).

Almost surely, 2^1232557985 is an apocalyptic number.

It is an amenable number.

1232557985 is a deficient number, since it is larger than the sum of its proper divisors (298388575).

1232557985 is a wasteful number, since it uses less digits than its factorization.

1232557985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21728.

The product of its digits is 756000, while the sum is 47.

The square root of 1232557985 is about 35107.8051863115. The cubic root of 1232557985 is about 1072.1835008443.

The spelling of 1232557985 in words is "one billion, two hundred thirty-two million, five hundred fifty-seven thousand, nine hundred eighty-five".