425473387697 has 4 divisors (see below), whose sum is σ = 426096336240. Its totient is φ = 424850439156.

The previous prime is 425473387693. The next prime is 425473387723. The reversal of 425473387697 is 796783374524.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 425473387697 - 2² = 425473387693 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (425473387693) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 311473247 + ... + 311474612.

It is an arithmetic number, because the mean of its divisors is an integer number (106524084060).

Almost surely, 2^425473387697 is an apocalyptic number.

It is an amenable number.

425473387697 is a deficient number, since it is larger than the sum of its proper divisors (622948543).

425473387697 is an equidigital number, since it uses as much as digits as its factorization.

425473387697 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 622948542.

The product of its digits is 213373440, while the sum is 65.

The spelling of 425473387697 in words is "four hundred twenty-five billion, four hundred seventy-three million, three hundred eighty-seven thousand, six hundred ninety-seven".