425773771 has 2 divisors, whose sum is σ = 425773772. Its totient is φ = 425773770.

The previous prime is 425773703. The next prime is 425773781. The reversal of 425773771 is 177377524.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 425773771 - 2⁹ = 425773259 is a prime.

It is not a weakly prime, because it can be changed into another prime (425773781) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 212886885 + 212886886.

It is an arithmetic number, because the mean of its divisors is an integer number (212886886).

Almost surely, 2^425773771 is an apocalyptic number.

425773771 is a deficient number, since it is larger than the sum of its proper divisors (1).

425773771 is an equidigital number, since it uses as much as digits as its factorization.

425773771 is an evil number, because the sum of its binary digits is even.

The product of its digits is 288120, while the sum is 43.

The square root of 425773771 is about 20634.2862973256. The cubic root of 425773771 is about 752.3033019737.

The spelling of 425773771 in words is "four hundred twenty-five million, seven hundred seventy-three thousand, seven hundred seventy-one".