1225332777750 has 32 divisors (see below), whose sum is σ = 3058430615136. Its totient is φ = 326755407200.

The previous prime is 1225332777743. The next prime is 1225332777761. The reversal of 1225332777750 is 577772335221.

It is a junction number, because it is equal to n+sod(n) for n = 1225332777693 and 1225332777702.

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, 816887769 + ... + 816889268.

It is an arithmetic number, because the mean of its divisors is an integer number (95575956723).

Almost surely, 2^{1225332777750} is an apocalyptic number.

1225332777750 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1225332777750 is an abundant number, since it is smaller than the sum of its proper divisors (1833097837386).

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

1225332777750 is a wasteful number, since it uses less digits than its factorization.

1225332777750 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1633777057 (or 1633777047 counting only the distinct ones).

The product of its (nonzero) digits is 4321800, while the sum is 51.

The spelling of 1225332777750 in words is "one trillion, two hundred twenty-five billion, three hundred thirty-two million, seven hundred seventy-seven thousand, seven hundred fifty".