425446424644523 has 2 divisors, whose sum is σ = 425446424644524. Its totient is φ = 425446424644522.

The previous prime is 425446424644517. The next prime is 425446424644543. The reversal of 425446424644523 is 325446424644524.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 425446424644523 - 2¹² = 425446424640427 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (425446424644543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 212723212322261 + 212723212322262.

It is an arithmetic number, because the mean of its divisors is an integer number (212723212322262).

Almost surely, 2^{425446424644523} is an apocalyptic number.

425446424644523 is a deficient number, since it is larger than the sum of its proper divisors (1).

425446424644523 is an equidigital number, since it uses as much as digits as its factorization.

425446424644523 is an evil number, because the sum of its binary digits is even.

The product of its digits is 353894400, while the sum is 59.

Subtracting from 425446424644523 its reverse (325446424644524), we obtain a palindrome (99999999999999).

The spelling of 425446424644523 in words is "four hundred twenty-five trillion, four hundred forty-six billion, four hundred twenty-four million, six hundred forty-four thousand, five hundred twenty-three".