117225665 has 16 divisors (see below), whose sum is σ = 144209808. Its totient is φ = 91443456.

The previous prime is 117225653. The next prime is 117225709. The reversal of 117225665 is 566522711.

It can be written as a sum of positive squares in 8 ways, for example, as 7059649 + 110166016 = 2657^2 + 10496^2 .

It is a cyclic number.

It is not a de Polignac number, because 117225665 - 2¹⁸ = 116963521 is a prime.

It is a Duffinian number.

It is a Curzon 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, 44567 + ... + 47123.

It is an arithmetic number, because the mean of its divisors is an integer number (9013113).

Almost surely, 2^117225665 is an apocalyptic number.

It is an amenable number.

117225665 is a deficient number, since it is larger than the sum of its proper divisors (26984143).

117225665 is a wasteful number, since it uses less digits than its factorization.

117225665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2788.

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

The square root of 117225665 is about 10827.0801696487. The cubic root of 117225665 is about 489.4115732640.

The spelling of 117225665 in words is "one hundred seventeen million, two hundred twenty-five thousand, six hundred sixty-five".