117625681 has 2 divisors, whose sum is σ = 117625682. Its totient is φ = 117625680.

The previous prime is 117625663. The next prime is 117625727. The reversal of 117625681 is 186526711.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 79495056 + 38130625 = 8916^2 + 6175^2 .

It is a cyclic number.

It is not a de Polignac number, because 117625681 - 2²⁵ = 84071249 is a prime.

It is a super-2 number, since 2×117625681² = 27671601661427522, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 117625681.

It is not a weakly prime, because it can be changed into another prime (117625661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58812840 + 58812841.

It is an arithmetic number, because the mean of its divisors is an integer number (58812841).

Almost surely, 2^117625681 is an apocalyptic number.

It is an amenable number.

117625681 is a deficient number, since it is larger than the sum of its proper divisors (1).

117625681 is an equidigital number, since it uses as much as digits as its factorization.

117625681 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20160, while the sum is 37.

The square root of 117625681 is about 10845.5373771888. The cubic root of 117625681 is about 489.9676238500.

The spelling of 117625681 in words is "one hundred seventeen million, six hundred twenty-five thousand, six hundred eighty-one".