1025513305249 has 2 divisors, whose sum is σ = 1025513305250. Its totient is φ = 1025513305248.

The previous prime is 1025513305189. The next prime is 1025513305261. The reversal of 1025513305249 is 9425033155201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 591410217024 + 434103088225 = 769032^2 + 658865^2 .

It is an emirp because it is prime and its reverse (9425033155201) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1025513305249 - 2⁷ = 1025513305121 is a prime.

It is not a weakly prime, because it can be changed into another prime (1025513105249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 512756652624 + 512756652625.

It is an arithmetic number, because the mean of its divisors is an integer number (512756652625).

Almost surely, 2^{1025513305249} is an apocalyptic number.

It is an amenable number.

1025513305249 is a deficient number, since it is larger than the sum of its proper divisors (1).

1025513305249 is an equidigital number, since it uses as much as digits as its factorization.

1025513305249 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 162000, while the sum is 40.

The spelling of 1025513305249 in words is "one trillion, twenty-five billion, five hundred thirteen million, three hundred five thousand, two hundred forty-nine".