1025520001222 has 64 divisors (see below), whose sum is σ = 1640320450560. Its totient is φ = 480080311200.

The previous prime is 1025520001159. The next prime is 1025520001223. The reversal of 1025520001222 is 2221000255201.

It is a junction number, because it is equal to n+sod(n) for n = 1025520001193 and 1025520001202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1025520001223) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 125503197 + ... + 125511367.

It is an arithmetic number, because the mean of its divisors is an integer number (25630007040).

Almost surely, 2^{1025520001222} is an apocalyptic number.

1025520001222 is a deficient number, since it is larger than the sum of its proper divisors (614800449338).

1025520001222 is a wasteful number, since it uses less digits than its factorization.

1025520001222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8689.

The product of its (nonzero) digits is 800, while the sum is 22.

Adding to 1025520001222 its reverse (2221000255201), we get a palindrome (3246520256423).

The spelling of 1025520001222 in words is "one trillion, twenty-five billion, five hundred twenty million, one thousand, two hundred twenty-two".