425421946 has 4 divisors (see below), whose sum is σ = 638132922. Its totient is φ = 212710972.

The previous prime is 425421943. The next prime is 425421947. The reversal of 425421946 is 649124524.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 382007025 + 43414921 = 19545^2 + 6589^2 .

It is not an unprimeable number, because it can be changed into a prime (425421943) 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, 106355485 + ... + 106355488.

Almost surely, 2^425421946 is an apocalyptic number.

425421946 is a deficient number, since it is larger than the sum of its proper divisors (212710976).

425421946 is a wasteful number, since it uses less digits than its factorization.

425421946 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 212710975.

The product of its digits is 69120, while the sum is 37.

The square root of 425421946 is about 20625.7592829937. The cubic root of 425421946 is about 752.0960306762.

The spelling of 425421946 in words is "four hundred twenty-five million, four hundred twenty-one thousand, nine hundred forty-six".