30021425 has 24 divisors (see below), whose sum is σ = 44788800. Its totient is φ = 19500480.

The previous prime is 30021377. The next prime is 30021437. The reversal of 30021425 is 52412003.

It is not a de Polignac number, because 30021425 - 2¹⁰ = 30020401 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1190 + ... + 7839.

It is an arithmetic number, because the mean of its divisors is an integer number (1866200).

Almost surely, 2^30021425 is an apocalyptic number.

30021425 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

30021425 is a deficient number, since it is larger than the sum of its proper divisors (14767375).

30021425 is a wasteful number, since it uses less digits than its factorization.

30021425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9065 (or 9060 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 30021425 is about 5479.1810519456. The cubic root of 30021425 is about 310.7972023896.

Adding to 30021425 its reverse (52412003), we get a palindrome (82433428).

The spelling of 30021425 in words is "thirty million, twenty-one thousand, four hundred twenty-five".