1265359652 has 12 divisors (see below), whose sum is σ = 2224050780. Its totient is φ = 629916576.

The previous prime is 1265359631. The next prime is 1265359679. The reversal of 1265359652 is 2569535621.

It can be written as a sum of positive squares in 2 ways, for example, as 930616036 + 334743616 = 30506^2 + 18296^2 .

It is a super-2 number, since 2×1265359652² = 3202270097819122208, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 689783 + ... + 691614.

It is an arithmetic number, because the mean of its divisors is an integer number (185337565).

Almost surely, 2^1265359652 is an apocalyptic number.

It is an amenable number.

1265359652 is a deficient number, since it is larger than the sum of its proper divisors (958691128).

1265359652 is a wasteful number, since it uses less digits than its factorization.

1265359652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1381630 (or 1381628 counting only the distinct ones).

The product of its digits is 486000, while the sum is 44.

The square root of 1265359652 is about 35571.8941300572. The cubic root of 1265359652 is about 1081.6115777726.

The spelling of 1265359652 in words is "one billion, two hundred sixty-five million, three hundred fifty-nine thousand, six hundred fifty-two".