1265504928 has 48 divisors (see below), whose sum is σ = 3345884640. Its totient is φ = 418795776.

The previous prime is 1265504917. The next prime is 1265504941. The reversal of 1265504928 is 8294055621.

It is a tau number, because it is divible by the number of its divisors (48).

It is a super-4 number, since 4×1265504928⁴ (a number of 38 digits) contains 4444 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1265504928.

It is an unprimeable number.

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, 34075 + ... + 60762.

It is an arithmetic number, because the mean of its divisors is an integer number (69705930).

Almost surely, 2^1265504928 is an apocalyptic number.

It is an amenable number.

1265504928 is an abundant number, since it is smaller than the sum of its proper divisors (2080379712).

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

1265504928 is a wasteful number, since it uses less digits than its factorization.

1265504928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94989 (or 94981 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 42.

The square root of 1265504928 is about 35573.9360768527. The cubic root of 1265504928 is about 1081.6529694803.

The spelling of 1265504928 in words is "one billion, two hundred sixty-five million, five hundred four thousand, nine hundred twenty-eight".