1120257665 has 16 divisors (see below), whose sum is σ = 1407587328. Its totient is φ = 854289216.

The previous prime is 1120257647. The next prime is 1120257701. The reversal of 1120257665 is 5667520211.

It is a cyclic number.

It is not a de Polignac number, because 1120257665 - 2⁸ = 1120257409 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17072 + ... + 50318.

It is an arithmetic number, because the mean of its divisors is an integer number (87974208).

Almost surely, 2^1120257665 is an apocalyptic number.

It is an amenable number.

1120257665 is a deficient number, since it is larger than the sum of its proper divisors (287329663).

1120257665 is a wasteful number, since it uses less digits than its factorization.

1120257665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33568.

The product of its (nonzero) digits is 25200, while the sum is 35.

The square root of 1120257665 is about 33470.2504472255. The cubic root of 1120257665 is about 1038.5784525968.

Adding to 1120257665 its reverse (5667520211), we get a palindrome (6787777876).

The spelling of 1120257665 in words is "one billion, one hundred twenty million, two hundred fifty-seven thousand, six hundred sixty-five".