425406166442 has 8 divisors (see below), whose sum is σ = 644427163332. Its totient is φ = 210597112000.

The previous prime is 425406166439. The next prime is 425406166477. The reversal of 425406166442 is 244661604524.

It can be written as a sum of positive squares in 2 ways, for example, as 417172600321 + 8233566121 = 645889^2 + 90739^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 425406166393 and 425406166402.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1052985359 + ... + 1052985762.

Almost surely, 2^425406166442 is an apocalyptic number.

425406166442 is a deficient number, since it is larger than the sum of its proper divisors (219020996890).

425406166442 is a wasteful number, since it uses less digits than its factorization.

425406166442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2105971224.

The product of its (nonzero) digits is 1105920, while the sum is 44.

The spelling of 425406166442 in words is "four hundred twenty-five billion, four hundred six million, one hundred sixty-six thousand, four hundred forty-two".