1265246872 has 16 divisors (see below), whose sum is σ = 2411229600. Its totient is φ = 622252320.

The previous prime is 1265246869. The next prime is 1265246903. The reversal of 1265246872 is 2786425621.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1295872 + ... + 1296847.

It is an arithmetic number, because the mean of its divisors is an integer number (150701850).

Almost surely, 2^1265246872 is an apocalyptic number.

It is an amenable number.

1265246872 is a deficient number, since it is larger than the sum of its proper divisors (1145982728).

1265246872 is a wasteful number, since it uses less digits than its factorization.

1265246872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2592786 (or 2592782 counting only the distinct ones).

The product of its digits is 322560, while the sum is 43.

The square root of 1265246872 is about 35570.3088544364. The cubic root of 1265246872 is about 1081.5794425669.

The spelling of 1265246872 in words is "one billion, two hundred sixty-five million, two hundred forty-six thousand, eight hundred seventy-two".