1025495400439 has 2 divisors, whose sum is σ = 1025495400440. Its totient is φ = 1025495400438.

The previous prime is 1025495400403. The next prime is 1025495400463. The reversal of 1025495400439 is 9340045945201.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1025495400439 - 2¹¹ = 1025495398391 is a prime.

It is a super-2 number, since 2×1025495400439² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1025495400239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 512747700219 + 512747700220.

It is an arithmetic number, because the mean of its divisors is an integer number (512747700220).

Almost surely, 2^{1025495400439} is an apocalyptic number.

1025495400439 is a deficient number, since it is larger than the sum of its proper divisors (1).

1025495400439 is an equidigital number, since it uses as much as digits as its factorization.

1025495400439 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 777600, while the sum is 46.

The spelling of 1025495400439 in words is "one trillion, twenty-five billion, four hundred ninety-five million, four hundred thousand, four hundred thirty-nine".