168025261 has 2 divisors, whose sum is σ = 168025262. Its totient is φ = 168025260.

The previous prime is 168025223. The next prime is 168025271. The reversal of 168025261 is 162520861.

168025261 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 148718025 + 19307236 = 12195^2 + 4394^2 .

It is a cyclic number.

It is not a de Polignac number, because 168025261 - 2⁷ = 168025133 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (168025271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 84012630 + 84012631.

It is an arithmetic number, because the mean of its divisors is an integer number (84012631).

Almost surely, 2^168025261 is an apocalyptic number.

It is an amenable number.

168025261 is a deficient number, since it is larger than the sum of its proper divisors (1).

168025261 is an equidigital number, since it uses as much as digits as its factorization.

168025261 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5760, while the sum is 31.

The square root of 168025261 is about 12962.4558244185. The cubic root of 168025261 is about 551.8124899154.

The spelling of 168025261 in words is "one hundred sixty-eight million, twenty-five thousand, two hundred sixty-one".