425427523897 has 2 divisors, whose sum is σ = 425427523898. Its totient is φ = 425427523896.

The previous prime is 425427523891. The next prime is 425427523907. The reversal of 425427523897 is 798325724524.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 404399333776 + 21028190121 = 635924^2 + 145011^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-425427523897 is a prime.

It is not a weakly prime, because it can be changed into another prime (425427523891) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 212713761948 + 212713761949.

It is an arithmetic number, because the mean of its divisors is an integer number (212713761949).

Almost surely, 2^425427523897 is an apocalyptic number.

It is an amenable number.

425427523897 is a deficient number, since it is larger than the sum of its proper divisors (1).

425427523897 is an equidigital number, since it uses as much as digits as its factorization.

425427523897 is an evil number, because the sum of its binary digits is even.

The product of its digits is 33868800, while the sum is 58.

The spelling of 425427523897 in words is "four hundred twenty-five billion, four hundred twenty-seven million, five hundred twenty-three thousand, eight hundred ninety-seven".