117425261 has 4 divisors (see below), whose sum is σ = 118213500. Its totient is φ = 116637024.

The previous prime is 117425257. The next prime is 117425293. The reversal of 117425261 is 162524711.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 63696361 + 53728900 = 7981^2 + 7330^2 .

It is a cyclic number.

It is not a de Polignac number, because 117425261 - 2² = 117425257 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (117425201) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 393896 + ... + 394193.

It is an arithmetic number, because the mean of its divisors is an integer number (29553375).

Almost surely, 2^117425261 is an apocalyptic number.

It is an amenable number.

117425261 is a deficient number, since it is larger than the sum of its proper divisors (788239).

117425261 is an equidigital number, since it uses as much as digits as its factorization.

117425261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 788238.

The product of its digits is 3360, while the sum is 29.

The square root of 117425261 is about 10836.2936929561. The cubic root of 117425261 is about 489.6891836986.

Adding to 117425261 its reverse (162524711), we get a palindrome (279949972).

The spelling of 117425261 in words is "one hundred seventeen million, four hundred twenty-five thousand, two hundred sixty-one".