425161777 has 2 divisors, whose sum is σ = 425161778. Its totient is φ = 425161776.

The previous prime is 425161771. The next prime is 425161799. The reversal of 425161777 is 777161524.

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., 414896161 + 10265616 = 20369^2 + 3204^2 .

It is a cyclic number.

It is not a de Polignac number, because 425161777 - 2¹⁹ = 424637489 is a prime.

It is not a weakly prime, because it can be changed into another prime (425161771) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 212580888 + 212580889.

It is an arithmetic number, because the mean of its divisors is an integer number (212580889).

Almost surely, 2^425161777 is an apocalyptic number.

It is an amenable number.

425161777 is a deficient number, since it is larger than the sum of its proper divisors (1).

425161777 is an equidigital number, since it uses as much as digits as its factorization.

425161777 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 82320, while the sum is 40.

The square root of 425161777 is about 20619.4514233527. The cubic root of 425161777 is about 751.9426833343.

The spelling of 425161777 in words is "four hundred twenty-five million, one hundred sixty-one thousand, seven hundred seventy-seven".