1268425001 has 2 divisors, whose sum is σ = 1268425002. Its totient is φ = 1268425000.

The previous prime is 1268424977. The next prime is 1268425003. The reversal of 1268425001 is 1005248621.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 925619776 + 342805225 = 30424^2 + 18515^2 .

It is a cyclic number.

It is not a de Polignac number, because 1268425001 - 2¹⁰ = 1268423977 is a prime.

It is a Sophie Germain prime.

Together with 1268425003, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (1268425003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 634212500 + 634212501.

It is an arithmetic number, because the mean of its divisors is an integer number (634212501).

Almost surely, 2^1268425001 is an apocalyptic number.

It is an amenable number.

1268425001 is a deficient number, since it is larger than the sum of its proper divisors (1).

1268425001 is an equidigital number, since it uses as much as digits as its factorization.

1268425001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3840, while the sum is 29.

The square root of 1268425001 is about 35614.9547381434. The cubic root of 1268425001 is about 1082.4842791339.

The spelling of 1268425001 in words is "one billion, two hundred sixty-eight million, four hundred twenty-five thousand, one".