1265212432 has 40 divisors (see below), whose sum is σ = 2814953760. Its totient is φ = 544826880.

The previous prime is 1265212397. The next prime is 1265212433. The reversal of 1265212432 is 2342125621.

It is a self number, because there is not a number n which added to its sum of digits gives 1265212432.

It is not an unprimeable number, because it can be changed into a prime (1265212433) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 185833 + ... + 192520.

It is an arithmetic number, because the mean of its divisors is an integer number (70373844).

Almost surely, 2^1265212432 is an apocalyptic number.

It is an amenable number.

1265212432 is an abundant number, since it is smaller than the sum of its proper divisors (1549741328).

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

1265212432 is a wasteful number, since it uses less digits than its factorization.

1265212432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 378391 (or 378385 counting only the distinct ones).

The product of its digits is 5760, while the sum is 28.

The square root of 1265212432 is about 35569.8247395176. The cubic root of 1265212432 is about 1081.5696289527.

The spelling of 1265212432 in words is "one billion, two hundred sixty-five million, two hundred twelve thousand, four hundred thirty-two".