425389961 has 2 divisors, whose sum is σ = 425389962. Its totient is φ = 425389960.

The previous prime is 425389931. The next prime is 425389973. The reversal of 425389961 is 169983524.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 378535936 + 46854025 = 19456^2 + 6845^2 .

It is a cyclic number.

It is not a de Polignac number, because 425389961 - 2¹⁰ = 425388937 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (425389931) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 212694980 + 212694981.

It is an arithmetic number, because the mean of its divisors is an integer number (212694981).

Almost surely, 2^425389961 is an apocalyptic number.

It is an amenable number.

425389961 is a deficient number, since it is larger than the sum of its proper divisors (1).

425389961 is an equidigital number, since it uses as much as digits as its factorization.

425389961 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 466560, while the sum is 47.

The square root of 425389961 is about 20624.9839030240. The cubic root of 425389961 is about 752.0771816294.

The spelling of 425389961 in words is "four hundred twenty-five million, three hundred eighty-nine thousand, nine hundred sixty-one".