1265732832 has 96 divisors (see below), whose sum is σ = 4089318912. Its totient is φ = 333817344.

The previous prime is 1265732827. The next prime is 1265732837. The reversal of 1265732832 is 2382375621.

It is an interprime number because it is at equal distance from previous prime (1265732827) and next prime (1265732837).

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1265732837) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 63708 + ... + 81179.

It is an arithmetic number, because the mean of its divisors is an integer number (42597072).

Almost surely, 2^1265732832 is an apocalyptic number.

1265732832 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1265732832 is an abundant number, since it is smaller than the sum of its proper divisors (2823586080).

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

1265732832 is a wasteful number, since it uses less digits than its factorization.

1265732832 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144920 (or 144912 counting only the distinct ones).

The product of its digits is 120960, while the sum is 39.

The square root of 1265732832 is about 35577.1391767241. The cubic root of 1265732832 is about 1081.7178969877.

The spelling of 1265732832 in words is "one billion, two hundred sixty-five million, seven hundred thirty-two thousand, eight hundred thirty-two".