125556433433 has 2 divisors, whose sum is σ = 125556433434. Its totient is φ = 125556433432.

The previous prime is 125556433417. The next prime is 125556433567. The reversal of 125556433433 is 334334655521.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 125459765209 + 96668224 = 354203^2 + 9832^2 .

It is a cyclic number.

It is not a de Polignac number, because 125556433433 - 2⁴ = 125556433417 is a prime.

It is not a weakly prime, because it can be changed into another prime (125556433633) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62778216716 + 62778216717.

It is an arithmetic number, because the mean of its divisors is an integer number (62778216717).

Almost surely, 2^125556433433 is an apocalyptic number.

It is an amenable number.

125556433433 is a deficient number, since it is larger than the sum of its proper divisors (1).

125556433433 is an equidigital number, since it uses as much as digits as its factorization.

125556433433 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1944000, while the sum is 44.

The spelling of 125556433433 in words is "one hundred twenty-five billion, five hundred fifty-six million, four hundred thirty-three thousand, four hundred thirty-three".