1225552402443 has 8 divisors (see below), whose sum is σ = 1634266945168. Its totient is φ = 816936397344.

The previous prime is 1225552402427. The next prime is 1225552402483. The reversal of 1225552402443 is 3442042555221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1225552402443 - 2⁴ = 1225552402427 is a prime.

It is a super-2 number, since 2×1225552402443² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1225552402483) 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 7 ways as a sum of consecutive naturals, for example, 24605380 + ... + 24655137.

It is an arithmetic number, because the mean of its divisors is an integer number (204283368146).

Almost surely, 2^{1225552402443} is an apocalyptic number.

1225552402443 is a deficient number, since it is larger than the sum of its proper divisors (408714542725).

1225552402443 is an equidigital number, since it uses as much as digits as its factorization.

1225552402443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49268813.

The product of its (nonzero) digits is 384000, while the sum is 39.

Adding to 1225552402443 its reverse (3442042555221), we get a palindrome (4667594957664).

The spelling of 1225552402443 in words is "one trillion, two hundred twenty-five billion, five hundred fifty-two million, four hundred two thousand, four hundred forty-three".