1225255264828 has 48 divisors (see below), whose sum is σ = 2561533438464. Its totient is φ = 501398758080.

The previous prime is 1225255264789. The next prime is 1225255264843. The reversal of 1225255264828 is 8284625525221.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1298275 + ... + 2033722.

It is an arithmetic number, because the mean of its divisors is an integer number (53365279968).

Almost surely, 2^{1225255264828} is an apocalyptic number.

It is an amenable number.

1225255264828 is an abundant number, since it is smaller than the sum of its proper divisors (1336278173636).

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

1225255264828 is a wasteful number, since it uses less digits than its factorization.

1225255264828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3332602 (or 3332600 counting only the distinct ones).

The product of its digits is 6144000, while the sum is 52.

The spelling of 1225255264828 in words is "one trillion, two hundred twenty-five billion, two hundred fifty-five million, two hundred sixty-four thousand, eight hundred twenty-eight".