1025871012427 has 2 divisors, whose sum is σ = 1025871012428. Its totient is φ = 1025871012426.

The previous prime is 1025871012409. The next prime is 1025871012479. The reversal of 1025871012427 is 7242101785201.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1025871012427 - 2¹¹ = 1025871010379 is a prime.

It is a super-2 number, since 2×1025871012427² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1025871012427.

It is not a weakly prime, because it can be changed into another prime (1025871016427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 512935506213 + 512935506214.

It is an arithmetic number, because the mean of its divisors is an integer number (512935506214).

Almost surely, 2^{1025871012427} is an apocalyptic number.

1025871012427 is a deficient number, since it is larger than the sum of its proper divisors (1).

1025871012427 is an equidigital number, since it uses as much as digits as its factorization.

1025871012427 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 62720, while the sum is 40.

Adding to 1025871012427 its reverse (7242101785201), we get a palindrome (8267972797628).

The spelling of 1025871012427 in words is "one trillion, twenty-five billion, eight hundred seventy-one million, twelve thousand, four hundred twenty-seven".