1265564625628 has 24 divisors (see below), whose sum is σ = 2274575834160. Its totient is φ = 615898195200.

The previous prime is 1265564625547. The next prime is 1265564625629. The reversal of 1265564625628 is 8265264655621.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1265564625629) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26523501 + ... + 26571172.

It is an arithmetic number, because the mean of its divisors is an integer number (94773993090).

Almost surely, 2^{1265564625628} is an apocalyptic number.

It is an amenable number.

1265564625628 is a deficient number, since it is larger than the sum of its proper divisors (1009011208532).

1265564625628 is a wasteful number, since it uses less digits than its factorization.

1265564625628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53094837 (or 53094835 counting only the distinct ones).

The product of its digits is 41472000, while the sum is 58.

The spelling of 1265564625628 in words is "one trillion, two hundred sixty-five billion, five hundred sixty-four million, six hundred twenty-five thousand, six hundred twenty-eight".