425473387693 has 2 divisors, whose sum is σ = 425473387694. Its totient is φ = 425473387692.

The previous prime is 425473387681. The next prime is 425473387723. The reversal of 425473387693 is 396783374524.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 287555482564 + 137917905129 = 536242^2 + 371373^2 .

It is a cyclic number.

It is not a de Polignac number, because 425473387693 - 2⁹ = 425473387181 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (425473357693) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 212736693846 + 212736693847.

It is an arithmetic number, because the mean of its divisors is an integer number (212736693847).

Almost surely, 2^425473387693 is an apocalyptic number.

It is an amenable number.

425473387693 is a deficient number, since it is larger than the sum of its proper divisors (1).

425473387693 is an equidigital number, since it uses as much as digits as its factorization.

425473387693 is an evil number, because the sum of its binary digits is even.

The product of its digits is 91445760, while the sum is 61.

The spelling of 425473387693 in words is "four hundred twenty-five billion, four hundred seventy-three million, three hundred eighty-seven thousand, six hundred ninety-three".