125556426337 has 2 divisors, whose sum is σ = 125556426338. Its totient is φ = 125556426336.

The previous prime is 125556426287. The next prime is 125556426361. The reversal of 125556426337 is 733624655521.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 70708659921 + 54847766416 = 265911^2 + 234196^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-125556426337 is a prime.

It is not a weakly prime, because it can be changed into another prime (125556421337) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62778213168 + 62778213169.

It is an arithmetic number, because the mean of its divisors is an integer number (62778213169).

Almost surely, 2^125556426337 is an apocalyptic number.

It is an amenable number.

125556426337 is a deficient number, since it is larger than the sum of its proper divisors (1).

125556426337 is an equidigital number, since it uses as much as digits as its factorization.

125556426337 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4536000, while the sum is 49.

The spelling of 125556426337 in words is "one hundred twenty-five billion, five hundred fifty-six million, four hundred twenty-six thousand, three hundred thirty-seven".