1265585048 has 128 divisors (see below), whose sum is σ = 3027024000. Its totient is φ = 482734080.

The previous prime is 1265585033. The next prime is 1265585107. The reversal of 1265585048 is 8405855621.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3253238 + ... + 3253626.

It is an arithmetic number, because the mean of its divisors is an integer number (23648625).

Almost surely, 2^1265585048 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1265585048, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1513512000).

1265585048 is an abundant number, since it is smaller than the sum of its proper divisors (1761438952).

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

1265585048 is a wasteful number, since it uses less digits than its factorization.

1265585048 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 565 (or 561 counting only the distinct ones).

The product of its (nonzero) digits is 384000, while the sum is 44.

The square root of 1265585048 is about 35575.0621643870. The cubic root of 1265585048 is about 1081.6757957333.

The spelling of 1265585048 in words is "one billion, two hundred sixty-five million, five hundred eighty-five thousand, forty-eight".