1025351424421 has 2 divisors, whose sum is σ = 1025351424422. Its totient is φ = 1025351424420.

The previous prime is 1025351424389. The next prime is 1025351424481. The reversal of 1025351424421 is 1244241535201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 938261512321 + 87089912100 = 968639^2 + 295110^2 .

It is a cyclic number.

It is not a de Polignac number, because 1025351424421 - 2⁵ = 1025351424389 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1025351424481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 512675712210 + 512675712211.

It is an arithmetic number, because the mean of its divisors is an integer number (512675712211).

Almost surely, 2^{1025351424421} is an apocalyptic number.

It is an amenable number.

1025351424421 is a deficient number, since it is larger than the sum of its proper divisors (1).

1025351424421 is an equidigital number, since it uses as much as digits as its factorization.

1025351424421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 38400, while the sum is 34.

Adding to 1025351424421 its reverse (1244241535201), we get a palindrome (2269592959622).

The spelling of 1025351424421 in words is "one trillion, twenty-five billion, three hundred fifty-one million, four hundred twenty-four thousand, four hundred twenty-one".