125000687447 has 2 divisors, whose sum is σ = 125000687448. Its totient is φ = 125000687446.

The previous prime is 125000687437. The next prime is 125000687467. The reversal of 125000687447 is 744786000521.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 125000687447 - 2⁸ = 125000687191 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 125000687398 and 125000687407.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (125000687407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62500343723 + 62500343724.

It is an arithmetic number, because the mean of its divisors is an integer number (62500343724).

Almost surely, 2^125000687447 is an apocalyptic number.

125000687447 is a deficient number, since it is larger than the sum of its proper divisors (1).

125000687447 is an equidigital number, since it uses as much as digits as its factorization.

125000687447 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 376320, while the sum is 44.

Adding to 125000687447 its reverse (744786000521), we get a palindrome (869786687968).

The spelling of 125000687447 in words is "one hundred twenty-five billion, six hundred eighty-seven thousand, four hundred forty-seven".