1234452420225 has 72 divisors (see below), whose sum is σ = 2271536646080. Its totient is φ = 640372728960.

The previous prime is 1234452420221. The next prime is 1234452420287. The reversal of 1234452420225 is 5220242544321.

1234452420225 is a `hidden beast` number, since 1 + 2 + 3 + 4 + 4 + 5 + 2 + 420 + 225 = 666.

It is not a de Polignac number, because 1234452420225 - 2² = 1234452420221 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1234452420225.

It is not an unprimeable number, because it can be changed into a prime (1234452420221) 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 71 ways as a sum of consecutive naturals, for example, 27508356 + ... + 27553194.

Almost surely, 2^{1234452420225} is an apocalyptic number.

1234452420225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1234452420225 is a deficient number, since it is larger than the sum of its proper divisors (1037084225855).

1234452420225 is a wasteful number, since it uses less digits than its factorization.

1234452420225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48199 (or 48191 counting only the distinct ones).

The product of its (nonzero) digits is 153600, while the sum is 36.

Adding to 1234452420225 its reverse (5220242544321), we get a palindrome (6454694964546).

The spelling of 1234452420225 in words is "one trillion, two hundred thirty-four billion, four hundred fifty-two million, four hundred twenty thousand, two hundred twenty-five".