1065260257 has 8 divisors (see below), whose sum is σ = 1072700384. Its totient is φ = 1057831488.

The previous prime is 1065260243. The next prime is 1065260291. The reversal of 1065260257 is 7520625601.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1065260257 - 2²⁷ = 931042529 is a prime.

It is a super-2 number, since 2×1065260257² = 2269558830287412098, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1065260057) 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 in 7 ways as a sum of consecutive naturals, for example, 278953 + ... + 282745.

It is an arithmetic number, because the mean of its divisors is an integer number (134087548).

Almost surely, 2^1065260257 is an apocalyptic number.

It is an amenable number.

1065260257 is a deficient number, since it is larger than the sum of its proper divisors (7440127).

1065260257 is a wasteful number, since it uses less digits than its factorization.

1065260257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5679.

The product of its (nonzero) digits is 25200, while the sum is 34.

The square root of 1065260257 is about 32638.3249723389. The cubic root of 1065260257 is about 1021.2966519361.

Adding to 1065260257 its reverse (7520625601), we get a palindrome (8585885858).

The spelling of 1065260257 in words is "one billion, sixty-five million, two hundred sixty thousand, two hundred fifty-seven".