1225240444143 has 8 divisors (see below), whose sum is σ = 1815171028400. Its totient is φ = 816826962744.

The previous prime is 1225240444139. The next prime is 1225240444147. The reversal of 1225240444143 is 3414440425221.

1225240444143 is a `hidden beast` number, since 1 + 22 + 52 + 4 + 0 + 444 + 143 = 666.

It is an interprime number because it is at equal distance from previous prime (1225240444139) and next prime (1225240444147).

It is not a de Polignac number, because 1225240444143 - 2² = 1225240444139 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1225240444098 and 1225240444107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1225240444147) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22689637828 + ... + 22689637881.

It is an arithmetic number, because the mean of its divisors is an integer number (226896378550).

Almost surely, 2^{1225240444143} is an apocalyptic number.

1225240444143 is a deficient number, since it is larger than the sum of its proper divisors (589930584257).

1225240444143 is an equidigital number, since it uses as much as digits as its factorization.

1225240444143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45379275718 (or 45379275712 counting only the distinct ones).

The product of its (nonzero) digits is 122880, while the sum is 36.

Adding to 1225240444143 its reverse (3414440425221), we get a palindrome (4639680869364).

The spelling of 1225240444143 in words is "one trillion, two hundred twenty-five billion, two hundred forty million, four hundred forty-four thousand, one hundred forty-three".