1020125415457 has 2 divisors, whose sum is σ = 1020125415458. Its totient is φ = 1020125415456.

The previous prime is 1020125415383. The next prime is 1020125415469. The reversal of 1020125415457 is 7545145210201.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 537217168401 + 482908247056 = 732951^2 + 694916^2 .

It is a cyclic number.

It is not a de Polignac number, because 1020125415457 - 2¹¹ = 1020125413409 is a prime.

It is a super-2 number, since 2×1020125415457² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1020125412457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 510062707728 + 510062707729.

It is an arithmetic number, because the mean of its divisors is an integer number (510062707729).

Almost surely, 2^{1020125415457} is an apocalyptic number.

It is an amenable number.

1020125415457 is a deficient number, since it is larger than the sum of its proper divisors (1).

1020125415457 is an equidigital number, since it uses as much as digits as its factorization.

1020125415457 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 56000, while the sum is 37.

The spelling of 1020125415457 in words is "one trillion, twenty billion, one hundred twenty-five million, four hundred fifteen thousand, four hundred fifty-seven".