125181816703 has 2 divisors, whose sum is σ = 125181816704. Its totient is φ = 125181816702.

The previous prime is 125181816667. The next prime is 125181816769. The reversal of 125181816703 is 307618181521.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 125181816703 - 2¹⁷ = 125181685631 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 125181816703.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (125181816803) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62590908351 + 62590908352.

It is an arithmetic number, because the mean of its divisors is an integer number (62590908352).

Almost surely, 2^125181816703 is an apocalyptic number.

125181816703 is a deficient number, since it is larger than the sum of its proper divisors (1).

125181816703 is an equidigital number, since it uses as much as digits as its factorization.

125181816703 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 80640, while the sum is 43.

The spelling of 125181816703 in words is "one hundred twenty-five billion, one hundred eighty-one million, eight hundred sixteen thousand, seven hundred three".