1020125315437 has 2 divisors, whose sum is σ = 1020125315438. Its totient is φ = 1020125315436.

The previous prime is 1020125315393. The next prime is 1020125315477. The reversal of 1020125315437 is 7345135210201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 944951191396 + 75174124041 = 972086^2 + 274179^2 .

It is a cyclic number.

It is not a de Polignac number, because 1020125315437 - 2³¹ = 1017977831789 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1020125315477) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 510062657718 + 510062657719.

It is an arithmetic number, because the mean of its divisors is an integer number (510062657719).

Almost surely, 2^{1020125315437} is an apocalyptic number.

It is an amenable number.

1020125315437 is a deficient number, since it is larger than the sum of its proper divisors (1).

1020125315437 is an equidigital number, since it uses as much as digits as its factorization.

1020125315437 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 25200, while the sum is 34.

The spelling of 1020125315437 in words is "one trillion, twenty billion, one hundred twenty-five million, three hundred fifteen thousand, four hundred thirty-seven".