120225665 has 24 divisors (see below), whose sum is σ = 168317352. Its totient is φ = 82199040.

The previous prime is 120225659. The next prime is 120225667. The reversal of 120225665 is 566522021.

It can be written as a sum of positive squares in 4 ways, for example, as 1132096 + 119093569 = 1064^2 + 10913^2 .

It is not a de Polignac number, because 120225665 - 2⁶ = 120225601 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120225667) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 136025 + ... + 136905.

It is an arithmetic number, because the mean of its divisors is an integer number (7013223).

Almost surely, 2^120225665 is an apocalyptic number.

It is an amenable number.

120225665 is a deficient number, since it is larger than the sum of its proper divisors (48091687).

120225665 is an equidigital number, since it uses as much as digits as its factorization.

120225665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1457 (or 1450 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 29.

The square root of 120225665 is about 10964.7464630971. The cubic root of 120225665 is about 493.5514088926.

Adding to 120225665 its reverse (566522021), we get a palindrome (686747686).

The spelling of 120225665 in words is "one hundred twenty million, two hundred twenty-five thousand, six hundred sixty-five".