1020125315477 has 2 divisors, whose sum is σ = 1020125315478. Its totient is φ = 1020125315476.

The previous prime is 1020125315437. The next prime is 1020125315491. The reversal of 1020125315477 is 7745135210201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1000878192721 + 19247122756 = 1000439^2 + 138734^2 .

It is a cyclic number.

It is not a de Polignac number, because 1020125315477 - 2³⁶ = 951405838741 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1020125315477.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1020125315437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 510062657738 + 510062657739.

It is an arithmetic number, because the mean of its divisors is an integer number (510062657739).

Almost surely, 2^{1020125315477} is an apocalyptic number.

It is an amenable number.

1020125315477 is a deficient number, since it is larger than the sum of its proper divisors (1).

1020125315477 is an equidigital number, since it uses as much as digits as its factorization.

1020125315477 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 58800, while the sum is 38.

The spelling of 1020125315477 in words is "one trillion, twenty billion, one hundred twenty-five million, three hundred fifteen thousand, four hundred seventy-seven".