125770043778601 has 2 divisors, whose sum is σ = 125770043778602. Its totient is φ = 125770043778600.

The previous prime is 125770043778571. The next prime is 125770043778619. The reversal of 125770043778601 is 106877340077521.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 110386037938576 + 15384005840025 = 10506476^2 + 3922245^2 .

It is a cyclic number.

It is not a de Polignac number, because 125770043778601 - 2⁵ = 125770043778569 is a prime.

It is not a weakly prime, because it can be changed into another prime (125770043178601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62885021889300 + 62885021889301.

It is an arithmetic number, because the mean of its divisors is an integer number (62885021889301).

Almost surely, 2^{125770043778601} is an apocalyptic number.

It is an amenable number.

125770043778601 is a deficient number, since it is larger than the sum of its proper divisors (1).

125770043778601 is an equidigital number, since it uses as much as digits as its factorization.

125770043778601 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13829760, while the sum is 58.

The spelling of 125770043778601 in words is "one hundred twenty-five trillion, seven hundred seventy billion, forty-three million, seven hundred seventy-eight thousand, six hundred one".