1265432766 has 32 divisors (see below), whose sum is σ = 2732728320. Its totient is φ = 388338144.

The previous prime is 1265432743. The next prime is 1265432789. The reversal of 1265432766 is 6672345621.

It is an interprime number because it is at equal distance from previous prime (1265432743) and next prime (1265432789).

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 15 ways as a sum of consecutive naturals, for example, 8695 + ... + 51053.

It is an arithmetic number, because the mean of its divisors is an integer number (85397760).

Almost surely, 2^1265432766 is an apocalyptic number.

1265432766 is an abundant number, since it is smaller than the sum of its proper divisors (1467295554).

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

1265432766 is a wasteful number, since it uses less digits than its factorization.

1265432766 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42760.

The product of its digits is 362880, while the sum is 42.

The square root of 1265432766 is about 35572.9218085892. The cubic root of 1265432766 is about 1081.6324096432.

The spelling of 1265432766 in words is "one billion, two hundred sixty-five million, four hundred thirty-two thousand, seven hundred sixty-six".