1001345265 has 12 divisors (see below), whose sum is σ = 1735665204. Its totient is φ = 534050784.

The previous prime is 1001345249. The next prime is 1001345299. The reversal of 1001345265 is 5625431001.

1001345265 is a `hidden beast` number, since 1 + 0 + 0 + 134 + 526 + 5 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 414203904 + 587141361 = 20352^2 + 24231^2 .

It is not a de Polignac number, because 1001345265 - 2⁴ = 1001345249 is a prime.

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, 11126014 + ... + 11126103.

It is an arithmetic number, because the mean of its divisors is an integer number (144638767).

Almost surely, 2^1001345265 is an apocalyptic number.

1001345265 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1001345265 is a deficient number, since it is larger than the sum of its proper divisors (734319939).

1001345265 is a wasteful number, since it uses less digits than its factorization.

1001345265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22252128 (or 22252125 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

The square root of 1001345265 is about 31644.0399601568. The cubic root of 1001345265 is about 1000.4482207348.

Adding to 1001345265 its reverse (5625431001), we get a palindrome (6626776266).

It can be divided in two parts, 10013 and 45265, that added together give a triangular number (55278 = T₃₃₂).

The spelling of 1001345265 in words is "one billion, one million, three hundred forty-five thousand, two hundred sixty-five".