265685249 has 2 divisors, whose sum is σ = 265685250. Its totient is φ = 265685248.

The previous prime is 265685191. The next prime is 265685293. The reversal of 265685249 is 942586562.

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., 213744400 + 51940849 = 14620^2 + 7207^2 .

It is a cyclic number.

It is not a de Polignac number, because 265685249 - 2¹² = 265681153 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (265685149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 132842624 + 132842625.

It is an arithmetic number, because the mean of its divisors is an integer number (132842625).

Almost surely, 2^265685249 is an apocalyptic number.

It is an amenable number.

265685249 is a deficient number, since it is larger than the sum of its proper divisors (1).

265685249 is an equidigital number, since it uses as much as digits as its factorization.

265685249 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1036800, while the sum is 47.

The square root of 265685249 is about 16299.8542631522. The cubic root of 265685249 is about 642.8689954475.

The spelling of 265685249 in words is "two hundred sixty-five million, six hundred eighty-five thousand, two hundred forty-nine".