1225531233243 has 6 divisors (see below), whose sum is σ = 1770211781364. Its totient is φ = 817020822156.

The previous prime is 1225531233239. The next prime is 1225531233247. The reversal of 1225531233243 is 3423321355221.

1225531233243 is a `hidden beast` number, since 1 + 2 + 2 + 5 + 5 + 312 + 332 + 4 + 3 = 666.

It is an interprime number because it is at equal distance from previous prime (1225531233239) and next prime (1225531233247).

It is not a de Polignac number, because 1225531233243 - 2² = 1225531233239 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1225531233198 and 1225531233207.

It is not an unprimeable number, because it can be changed into a prime (1225531233247) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 68085068505 + ... + 68085068522.

It is an arithmetic number, because the mean of its divisors is an integer number (295035296894).

Almost surely, 2^{1225531233243} is an apocalyptic number.

1225531233243 is a deficient number, since it is larger than the sum of its proper divisors (544680548121).

1225531233243 is a wasteful number, since it uses less digits than its factorization.

1225531233243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136170137033 (or 136170137030 counting only the distinct ones).

The product of its digits is 129600, while the sum is 36.

Adding to 1225531233243 its reverse (3423321355221), we get a palindrome (4648852588464).

The spelling of 1225531233243 in words is "one trillion, two hundred twenty-five billion, five hundred thirty-one million, two hundred thirty-three thousand, two hundred forty-three".