1222404554025 has 18 divisors (see below), whose sum is σ = 2189462379390. Its totient is φ = 651949095360.

The previous prime is 1222404553987. The next prime is 1222404554113. The reversal of 1222404554025 is 5204554042221.

1222404554025 is a `hidden beast` number, since 1 + 2 + 2 + 240 + 4 + 5 + 5 + 402 + 5 = 666.

It can be written as a sum of positive squares in 3 ways, for example, as 410805365481 + 811599188544 = 640941^2 + 900888^2 .

It is not a de Polignac number, because 1222404554025 - 2³⁶ = 1153685077289 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 2716454340 + ... + 2716454789.

It is an arithmetic number, because the mean of its divisors is an integer number (121636798855).

Almost surely, 2^{1222404554025} is an apocalyptic number.

1222404554025 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1222404554025 is a deficient number, since it is larger than the sum of its proper divisors (967057825365).

1222404554025 is a wasteful number, since it uses less digits than its factorization.

1222404554025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5432909145 (or 5432909137 counting only the distinct ones).

The product of its (nonzero) digits is 128000, while the sum is 36.

Adding to 1222404554025 its reverse (5204554042221), we get a palindrome (6426958596246).

The spelling of 1222404554025 in words is "one trillion, two hundred twenty-two billion, four hundred four million, five hundred fifty-four thousand, twenty-five".