125054003561 has 2 divisors, whose sum is σ = 125054003562. Its totient is φ = 125054003560.

The previous prime is 125054003531. The next prime is 125054003567. The reversal of 125054003561 is 165300450521.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 81213600400 + 43840403161 = 284980^2 + 209381^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-125054003561 is a prime.

It is not a weakly prime, because it can be changed into another prime (125054003567) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62527001780 + 62527001781.

It is an arithmetic number, because the mean of its divisors is an integer number (62527001781).

Almost surely, 2^125054003561 is an apocalyptic number.

It is an amenable number.

125054003561 is a deficient number, since it is larger than the sum of its proper divisors (1).

125054003561 is an equidigital number, since it uses as much as digits as its factorization.

125054003561 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18000, while the sum is 32.

The spelling of 125054003561 in words is "one hundred twenty-five billion, fifty-four million, three thousand, five hundred sixty-one".