1200403440225 has 96 divisors (see below), whose sum is σ = 2461603161600. Its totient is φ = 568478433600.

The previous prime is 1200403440163. The next prime is 1200403440281. The reversal of 1200403440225 is 5220443040021.

1200403440225 is a `hidden beast` number, since 1 + 200 + 4 + 0 + 34 + 402 + 25 = 666.

It is not a de Polignac number, because 1200403440225 - 2⁷ = 1200403440097 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

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 95 ways as a sum of consecutive naturals, for example, 1560615 + ... + 2199164.

It is an arithmetic number, because the mean of its divisors is an integer number (25641699600).

Almost surely, 2^{1200403440225} is an apocalyptic number.

1200403440225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1200403440225 is an abundant number, since it is smaller than the sum of its proper divisors (1261199721375).

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

1200403440225 is a wasteful number, since it uses less digits than its factorization.

1200403440225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3759852 (or 3759841 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 27.

Adding to 1200403440225 its reverse (5220443040021), we get a palindrome (6420846480246).

The spelling of 1200403440225 in words is "one trillion, two hundred billion, four hundred three million, four hundred forty thousand, two hundred twenty-five".