117661325 has 12 divisors (see below), whose sum is σ = 148654548. Its totient is φ = 92352000.

The previous prime is 117661321. The next prime is 117661333. The reversal of 117661325 is 523166711.

It can be written as a sum of positive squares in 6 ways, for example, as 15792676 + 101868649 = 3974^2 + 10093^2 .

It is not a de Polignac number, because 117661325 - 2² = 117661321 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 117661291 and 117661300.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (117661321) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 43076 + ... + 45725.

It is an arithmetic number, because the mean of its divisors is an integer number (12387879).

Almost surely, 2^117661325 is an apocalyptic number.

It is an amenable number.

117661325 is a deficient number, since it is larger than the sum of its proper divisors (30993223).

117661325 is an equidigital number, since it uses as much as digits as its factorization.

117661325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88864 (or 88859 counting only the distinct ones).

The product of its digits is 7560, while the sum is 32.

The square root of 117661325 is about 10847.1805092383. The cubic root of 117661325 is about 490.0171103285.

The spelling of 117661325 in words is "one hundred seventeen million, six hundred sixty-one thousand, three hundred twenty-five".