125121035777 has 2 divisors, whose sum is σ = 125121035778. Its totient is φ = 125121035776.

The previous prime is 125121035771. The next prime is 125121035783. The reversal of 125121035777 is 777530121521.

It is a balanced prime because it is at equal distance from previous prime (125121035771) and next prime (125121035783).

It can be written as a sum of positive squares in only one way, i.e., 69609434896 + 55511600881 = 263836^2 + 235609^2 .

It is a cyclic number.

It is not a de Polignac number, because 125121035777 - 2¹² = 125121031681 is a prime.

It is not a weakly prime, because it can be changed into another prime (125121035771) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62560517888 + 62560517889.

It is an arithmetic number, because the mean of its divisors is an integer number (62560517889).

Almost surely, 2^125121035777 is an apocalyptic number.

It is an amenable number.

125121035777 is a deficient number, since it is larger than the sum of its proper divisors (1).

125121035777 is an equidigital number, since it uses as much as digits as its factorization.

125121035777 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 102900, while the sum is 41.

The spelling of 125121035777 in words is "one hundred twenty-five billion, one hundred twenty-one million, thirty-five thousand, seven hundred seventy-seven".