265573601 has 2 divisors, whose sum is σ = 265573602. Its totient is φ = 265573600.

The previous prime is 265573543. The next prime is 265573603. The reversal of 265573601 is 106375562.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 216237025 + 49336576 = 14705^2 + 7024^2 .

It is a cyclic number.

It is not a de Polignac number, because 265573601 - 2⁶ = 265573537 is a prime.

It is a Sophie Germain prime.

Together with 265573603, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (265573603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 132786800 + 132786801.

It is an arithmetic number, because the mean of its divisors is an integer number (132786801).

Almost surely, 2^265573601 is an apocalyptic number.

It is an amenable number.

265573601 is a deficient number, since it is larger than the sum of its proper divisors (1).

265573601 is an equidigital number, since it uses as much as digits as its factorization.

265573601 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 37800, while the sum is 35.

The square root of 265573601 is about 16296.4290873798. The cubic root of 265573601 is about 642.7789326205.

The spelling of 265573601 in words is "two hundred sixty-five million, five hundred seventy-three thousand, six hundred one".