265421201 has 2 divisors, whose sum is σ = 265421202. Its totient is φ = 265421200.

The previous prime is 265421171. The next prime is 265421207. The reversal of 265421201 is 102124562.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 246490000 + 18931201 = 15700^2 + 4351^2 .

It is a cyclic number.

It is not a de Polignac number, because 265421201 - 2²⁶ = 198312337 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (265421207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 132710600 + 132710601.

It is an arithmetic number, because the mean of its divisors is an integer number (132710601).

Almost surely, 2^265421201 is an apocalyptic number.

It is an amenable number.

265421201 is a deficient number, since it is larger than the sum of its proper divisors (1).

265421201 is an equidigital number, since it uses as much as digits as its factorization.

265421201 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 265421201 is about 16291.7525453832. The cubic root of 265421201 is about 642.6559557219.

Adding to 265421201 its reverse (102124562), we get a palindrome (367545763).

The spelling of 265421201 in words is "two hundred sixty-five million, four hundred twenty-one thousand, two hundred one".