265242401 has 2 divisors, whose sum is σ = 265242402. Its totient is φ = 265242400.

The previous prime is 265242359. The next prime is 265242433. The reversal of 265242401 is 104242562.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 186459025 + 78783376 = 13655^2 + 8876^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-265242401 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (265242491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 132621200 + 132621201.

It is an arithmetic number, because the mean of its divisors is an integer number (132621201).

Almost surely, 2^265242401 is an apocalyptic number.

It is an amenable number.

265242401 is a deficient number, since it is larger than the sum of its proper divisors (1).

265242401 is an equidigital number, since it uses as much as digits as its factorization.

265242401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3840, while the sum is 26.

The square root of 265242401 is about 16286.2641818190. The cubic root of 265242401 is about 642.5116157115.

Adding to 265242401 its reverse (104242562), we get a palindrome (369484963).

The spelling of 265242401 in words is "two hundred sixty-five million, two hundred forty-two thousand, four hundred one".