1260264305 has 12 divisors (see below), whose sum is σ = 1535253300. Its totient is φ = 993145824.

The previous prime is 1260264293. The next prime is 1260264311. The reversal of 1260264305 is 5034620621.

It can be written as a sum of positive squares in 2 ways, for example, as 729054001 + 531210304 = 27001^2 + 23048^2 .

It is not a de Polignac number, because 1260264305 - 2⁶ = 1260264241 is a prime.

It is a super-2 number, since 2×1260264305² = 3176532236914266050, which contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5630 + ... + 50519.

It is an arithmetic number, because the mean of its divisors is an integer number (127937775).

Almost surely, 2^1260264305 is an apocalyptic number.

It is an amenable number.

1260264305 is a deficient number, since it is larger than the sum of its proper divisors (274988995).

1260264305 is an frugal number, since it uses more digits than its factorization.

1260264305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56288 (or 56221 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 29.

The square root of 1260264305 is about 35500.2014783015. The cubic root of 1260264305 is about 1080.1578144440.

Adding to 1260264305 its reverse (5034620621), we get a palindrome (6294884926).

The spelling of 1260264305 in words is "one billion, two hundred sixty million, two hundred sixty-four thousand, three hundred five".