1265604753056 has 48 divisors (see below), whose sum is σ = 2939469120000. Its totient is φ = 524905194240.

The previous prime is 1265604753001. The next prime is 1265604753059. The reversal of 1265604753056 is 6503574065621.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1265604752995 and 1265604753013.

It is not an unprimeable number, because it can be changed into a prime (1265604753059) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 91122431 + ... + 91136318.

It is an arithmetic number, because the mean of its divisors is an integer number (61238940000).

Almost surely, 2^{1265604753056} is an apocalyptic number.

1265604753056 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1265604753056 is an abundant number, since it is smaller than the sum of its proper divisors (1673864366944).

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

1265604753056 is a wasteful number, since it uses less digits than its factorization.

1265604753056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 182258797 (or 182258789 counting only the distinct ones).

The product of its (nonzero) digits is 4536000, while the sum is 50.

The spelling of 1265604753056 in words is "one trillion, two hundred sixty-five billion, six hundred four million, seven hundred fifty-three thousand, fifty-six".