425335387447 has 2 divisors, whose sum is σ = 425335387448. Its totient is φ = 425335387446.

The previous prime is 425335387423. The next prime is 425335387469. The reversal of 425335387447 is 744783533524.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-425335387447 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (425335382447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 212667693723 + 212667693724.

It is an arithmetic number, because the mean of its divisors is an integer number (212667693724).

Almost surely, 2^425335387447 is an apocalyptic number.

425335387447 is a deficient number, since it is larger than the sum of its proper divisors (1).

425335387447 is an equidigital number, since it uses as much as digits as its factorization.

425335387447 is an evil number, because the sum of its binary digits is even.

The product of its digits is 33868800, while the sum is 55.

The spelling of 425335387447 in words is "four hundred twenty-five billion, three hundred thirty-five million, three hundred eighty-seven thousand, four hundred forty-seven".