1265040572 has 24 divisors (see below), whose sum is σ = 2312080512. Its totient is φ = 604494000.

The previous prime is 1265040551. The next prime is 1265040611. The reversal of 1265040572 is 2750405621.

It is a congruent number.

It is an unprimeable number.

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, 113447 + ... + 124097.

It is an arithmetic number, because the mean of its divisors is an integer number (96336688).

Almost surely, 2^1265040572 is an apocalyptic number.

It is an amenable number.

1265040572 is a deficient number, since it is larger than the sum of its proper divisors (1047039940).

1265040572 is a wasteful number, since it uses less digits than its factorization.

1265040572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11969 (or 11967 counting only the distinct ones).

The product of its (nonzero) digits is 16800, while the sum is 32.

The square root of 1265040572 is about 35567.4088457397. The cubic root of 1265040572 is about 1081.5206551022.

The spelling of 1265040572 in words is "one billion, two hundred sixty-five million, forty thousand, five hundred seventy-two".