117725261 has 2 divisors, whose sum is σ = 117725262. Its totient is φ = 117725260.

The previous prime is 117725219. The next prime is 117725263. The reversal of 117725261 is 162527711.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 68641225 + 49084036 = 8285^2 + 7006^2 .

It is a cyclic number.

It is not a de Polignac number, because 117725261 - 2¹⁸ = 117463117 is a prime.

Together with 117725263, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (117725263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58862630 + 58862631.

It is an arithmetic number, because the mean of its divisors is an integer number (58862631).

Almost surely, 2^117725261 is an apocalyptic number.

It is an amenable number.

117725261 is a deficient number, since it is larger than the sum of its proper divisors (1).

117725261 is an equidigital number, since it uses as much as digits as its factorization.

117725261 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5880, while the sum is 32.

The square root of 117725261 is about 10850.1272342770. The cubic root of 117725261 is about 490.1058510735.

The spelling of 117725261 in words is "one hundred seventeen million, seven hundred twenty-five thousand, two hundred sixty-one".