1265316432 has 20 divisors (see below), whose sum is σ = 3268734240. Its totient is φ = 421772128.

The previous prime is 1265316427. The next prime is 1265316463. The reversal of 1265316432 is 2346135621.

It is a junction number, because it is equal to n+sod(n) for n = 1265316393 and 1265316402.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13180332 + ... + 13180427.

It is an arithmetic number, because the mean of its divisors is an integer number (163436712).

Almost surely, 2^1265316432 is an apocalyptic number.

1265316432 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1265316432 is an abundant number, since it is smaller than the sum of its proper divisors (2003417808).

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

1265316432 is a wasteful number, since it uses less digits than its factorization.

1265316432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26360770 (or 26360764 counting only the distinct ones).

The product of its digits is 25920, while the sum is 33.

The square root of 1265316432 is about 35571.2866227805. The cubic root of 1265316432 is about 1081.5992630170.

The spelling of 1265316432 in words is "one billion, two hundred sixty-five million, three hundred sixteen thousand, four hundred thirty-two".