4021443402425 has 48 divisors (see below), whose sum is σ = 5251691963952. Its totient is φ = 3050704281600.

The previous prime is 4021443402407. The next prime is 4021443402433. The reversal of 4021443402425 is 5242043441204.

It can be written as a sum of positive squares in 24 ways, for example, as 3018266883856 + 1003176518569 = 1737316^2 + 1001587^2 .

It is a de Polignac number, because none of the positive numbers 2^k-4021443402425 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 36998459 + ... + 37106991.

It is an arithmetic number, because the mean of its divisors is an integer number (109410249249).

Almost surely, 2^{4021443402425} is an apocalyptic number.

It is an amenable number.

4021443402425 is a deficient number, since it is larger than the sum of its proper divisors (1230248561527).

4021443402425 is a wasteful number, since it uses less digits than its factorization.

4021443402425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109598 (or 109593 counting only the distinct ones).

The product of its (nonzero) digits is 122880, while the sum is 35.

Adding to 4021443402425 its reverse (5242043441204), we get a palindrome (9263486843629).

The spelling of 4021443402425 in words is "four trillion, twenty-one billion, four hundred forty-three million, four hundred two thousand, four hundred twenty-five".