442403425 has 12 divisors (see below), whose sum is σ = 554746860. Its totient is φ = 349944320.

The previous prime is 442403419. The next prime is 442403441. The reversal of 442403425 is 524304244.

It can be written as a sum of positive squares in 6 ways, for example, as 153165376 + 289238049 = 12376^2 + 17007^2 .

It is a de Polignac number, because none of the positive numbers 2^k-442403425 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 442403393 and 442403402.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 97192 + ... + 101641.

It is an arithmetic number, because the mean of its divisors is an integer number (46228905).

Almost surely, 2^442403425 is an apocalyptic number.

It is an amenable number.

442403425 is a deficient number, since it is larger than the sum of its proper divisors (112343435).

442403425 is a wasteful number, since it uses less digits than its factorization.

442403425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 198932 (or 198927 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 28.

The square root of 442403425 is about 21033.3883385440. The cubic root of 442403425 is about 761.9728435520.

Adding to 442403425 its reverse (524304244), we get a palindrome (966707669).

The spelling of 442403425 in words is "four hundred forty-two million, four hundred three thousand, four hundred twenty-five".