265203397 has 2 divisors, whose sum is σ = 265203398. Its totient is φ = 265203396.

The previous prime is 265203391. The next prime is 265203437. The reversal of 265203397 is 793302562.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 249450436 + 15752961 = 15794^2 + 3969^2 .

It is a cyclic number.

It is not a de Polignac number, because 265203397 - 2⁷ = 265203269 is a prime.

It is a super-5 number, since 5×265203397⁵ (a number of 43 digits) contains 55555 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (265203391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 132601698 + 132601699.

It is an arithmetic number, because the mean of its divisors is an integer number (132601699).

Almost surely, 2^265203397 is an apocalyptic number.

It is an amenable number.

265203397 is a deficient number, since it is larger than the sum of its proper divisors (1).

265203397 is an equidigital number, since it uses as much as digits as its factorization.

265203397 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 68040, while the sum is 37.

The square root of 265203397 is about 16285.0666869989. The cubic root of 265203397 is about 642.4801203052.

The spelling of 265203397 in words is "two hundred sixty-five million, two hundred three thousand, three hundred ninety-seven".