1265867372 has 36 divisors (see below), whose sum is σ = 2811216744. Its totient is φ = 493194240.

The previous prime is 1265867327. The next prime is 1265867417. The reversal of 1265867372 is 2737685621.

It is an interprime number because it is at equal distance from previous prime (1265867327) and next prime (1265867417).

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 11 ways as a sum of consecutive naturals, for example, 291413 + ... + 295724.

It is an arithmetic number, because the mean of its divisors is an integer number (78089354).

Almost surely, 2^1265867372 is an apocalyptic number.

It is an amenable number.

1265867372 is an abundant number, since it is smaller than the sum of its proper divisors (1545349372).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1265867372 is a wasteful number, since it uses less digits than its factorization.

1265867372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 587166 (or 587157 counting only the distinct ones).

The product of its digits is 846720, while the sum is 47.

The square root of 1265867372 is about 35579.0299474283. The cubic root of 1265867372 is about 1081.7562223925.

The spelling of 1265867372 in words is "one billion, two hundred sixty-five million, eight hundred sixty-seven thousand, three hundred seventy-two".