1055220550025 has 12 divisors (see below), whose sum is σ = 1343837631372. Its totient is φ = 821360859840.

The previous prime is 1055220550019. The next prime is 1055220550057. The reversal of 1055220550025 is 5200550225501.

It can be written as a sum of positive squares in 6 ways, for example, as 4917375376 + 1050303174649 = 70124^2 + 1024843^2 .

It is not a de Polignac number, because 1055220550025 - 2¹⁶ = 1055220484489 is a prime.

It is a super-2 number, since 2×1055220550025² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1055220549973 and 1055220550000.

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 11 ways as a sum of consecutive naturals, for example, 570388562 + ... + 570390411.

It is an arithmetic number, because the mean of its divisors is an integer number (111986469281).

Almost surely, 2^{1055220550025} is an apocalyptic number.

It is an amenable number.

1055220550025 is a deficient number, since it is larger than the sum of its proper divisors (288617081347).

1055220550025 is a wasteful number, since it uses less digits than its factorization.

1055220550025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1140779020 (or 1140779015 counting only the distinct ones).

The product of its (nonzero) digits is 25000, while the sum is 32.

Adding to 1055220550025 its reverse (5200550225501), we get a palindrome (6255770775526).

The spelling of 1055220550025 in words is "one trillion, fifty-five billion, two hundred twenty million, five hundred fifty thousand, twenty-five".