1200553215225 has 144 divisors (see below), whose sum is σ = 2488092626880. Its totient is φ = 506302272000.

The previous prime is 1200553215223. The next prime is 1200553215247. The reversal of 1200553215225 is 5225123550021.

It is not a de Polignac number, because 1200553215225 - 2¹ = 1200553215223 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1200553215223) 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 143 ways as a sum of consecutive naturals, for example, 90813666 + ... + 90826884.

It is an arithmetic number, because the mean of its divisors is an integer number (17278421020).

Almost surely, 2^{1200553215225} is an apocalyptic number.

1200553215225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1200553215225 is an abundant number, since it is smaller than the sum of its proper divisors (1287539411655).

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

1200553215225 is a wasteful number, since it uses less digits than its factorization.

1200553215225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15160 (or 15148 counting only the distinct ones).

The product of its (nonzero) digits is 30000, while the sum is 33.

Adding to 1200553215225 its reverse (5225123550021), we get a palindrome (6425676765246).

The spelling of 1200553215225 in words is "one trillion, two hundred billion, five hundred fifty-three million, two hundred fifteen thousand, two hundred twenty-five".