265153489 has 2 divisors, whose sum is σ = 265153490. Its totient is φ = 265153488.

The previous prime is 265153487. The next prime is 265153501. The reversal of 265153489 is 984351562.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 243110464 + 22043025 = 15592^2 + 4695^2 .

It is a cyclic number.

It is not a de Polignac number, because 265153489 - 2¹ = 265153487 is a prime.

Together with 265153487, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (265153487) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 132576744 + 132576745.

It is an arithmetic number, because the mean of its divisors is an integer number (132576745).

Almost surely, 2^265153489 is an apocalyptic number.

It is an amenable number.

265153489 is a deficient number, since it is larger than the sum of its proper divisors (1).

265153489 is an equidigital number, since it uses as much as digits as its factorization.

265153489 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 259200, while the sum is 43.

The square root of 265153489 is about 16283.5342908105. The cubic root of 265153489 is about 642.4398155054.

It can be divided in two parts, 26 and 5153489, that added together give a palindrome (5153515).

The spelling of 265153489 in words is "two hundred sixty-five million, one hundred fifty-three thousand, four hundred eighty-nine".