1425622365509 has 2 divisors, whose sum is σ = 1425622365510. Its totient is φ = 1425622365508.

The previous prime is 1425622365493. The next prime is 1425622365523. The reversal of 1425622365509 is 9055632265241.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1229541669409 + 196080696100 = 1108847^2 + 442810^2 .

It is a cyclic number.

It is not a de Polignac number, because 1425622365509 - 2⁴ = 1425622365493 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1421622365509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 712811182754 + 712811182755.

It is an arithmetic number, because the mean of its divisors is an integer number (712811182755).

Almost surely, 2^{1425622365509} is an apocalyptic number.

It is an amenable number.

1425622365509 is a deficient number, since it is larger than the sum of its proper divisors (1).

1425622365509 is an equidigital number, since it uses as much as digits as its factorization.

1425622365509 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3888000, while the sum is 50.

The spelling of 1425622365509 in words is "one trillion, four hundred twenty-five billion, six hundred twenty-two million, three hundred sixty-five thousand, five hundred nine".