30425643 has 6 divisors (see below), whose sum is σ = 43948164. Its totient is φ = 20283756.

The previous prime is 30425623. The next prime is 30425671. The reversal of 30425643 is 34652403.

It is not a de Polignac number, because 30425643 - 2⁸ = 30425387 is a prime.

It is not an unprimeable number, because it can be changed into a prime (30425623) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1690305 + ... + 1690322.

It is an arithmetic number, because the mean of its divisors is an integer number (7324694).

Almost surely, 2^30425643 is an apocalyptic number.

30425643 is a deficient number, since it is larger than the sum of its proper divisors (13522521).

30425643 is a wasteful number, since it uses less digits than its factorization.

30425643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3380633 (or 3380630 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 27.

The square root of 30425643 is about 5515.9444340929. The cubic root of 30425643 is about 312.1858791290.

The spelling of 30425643 in words is "thirty million, four hundred twenty-five thousand, six hundred forty-three".