1225588504728 has 64 divisors (see below), whose sum is σ = 3515632485120. Its totient is φ = 348773040000.

The previous prime is 1225588504703. The next prime is 1225588504757. The reversal of 1225588504728 is 8274058855221.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14490043 + ... + 14574378.

It is an arithmetic number, because the mean of its divisors is an integer number (54931757580).

Almost surely, 2^{1225588504728} is an apocalyptic number.

It is an amenable number.

1225588504728 is an abundant number, since it is smaller than the sum of its proper divisors (2290043980392).

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

1225588504728 is a wasteful number, since it uses less digits than its factorization.

1225588504728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29064688 (or 29064684 counting only the distinct ones).

The product of its (nonzero) digits is 14336000, while the sum is 57.

The spelling of 1225588504728 in words is "one trillion, two hundred twenty-five billion, five hundred eighty-eight million, five hundred four thousand, seven hundred twenty-eight".