425771407 has 2 divisors, whose sum is σ = 425771408. Its totient is φ = 425771406.

The previous prime is 425771389. The next prime is 425771471. The reversal of 425771407 is 704177524.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-425771407 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (425771807) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 212885703 + 212885704.

It is an arithmetic number, because the mean of its divisors is an integer number (212885704).

Almost surely, 2^425771407 is an apocalyptic number.

425771407 is a deficient number, since it is larger than the sum of its proper divisors (1).

425771407 is an equidigital number, since it uses as much as digits as its factorization.

425771407 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 54880, while the sum is 37.

The square root of 425771407 is about 20634.2290139467. The cubic root of 425771407 is about 752.3019096472.

The spelling of 425771407 in words is "four hundred twenty-five million, seven hundred seventy-one thousand, four hundred seven".