1265065450 has 48 divisors (see below), whose sum is σ = 2575058400. Its totient is φ = 458568000.

The previous prime is 1265065447. The next prime is 1265065457. The reversal of 1265065450 is 545605621.

It is not an unprimeable number, because it can be changed into a prime (1265065457) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 178576 + ... + 185524.

It is an arithmetic number, because the mean of its divisors is an integer number (53647050).

Almost surely, 2^1265065450 is an apocalyptic number.

1265065450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1265065450 is an abundant number, since it is smaller than the sum of its proper divisors (1309992950).

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

1265065450 is a wasteful number, since it uses less digits than its factorization.

1265065450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7303 (or 7298 counting only the distinct ones).

The product of its (nonzero) digits is 36000, while the sum is 34.

The square root of 1265065450 is about 35567.7585743043. The cubic root of 1265065450 is about 1081.5277447021.

The spelling of 1265065450 in words is "one billion, two hundred sixty-five million, sixty-five thousand, four hundred fifty".