30402025 has 12 divisors (see below), whose sum is σ = 37896012. Its totient is φ = 24194240.

The previous prime is 30402023. The next prime is 30402077. The reversal of 30402025 is 52020403.

It can be written as a sum of positive squares in 6 ways, for example, as 851929 + 29550096 = 923^2 + 5436^2 .

It is not a de Polignac number, because 30402025 - 2¹ = 30402023 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30402023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1839 + ... + 8011.

It is an arithmetic number, because the mean of its divisors is an integer number (3158001).

Almost surely, 2^30402025 is an apocalyptic number.

It is an amenable number.

30402025 is a deficient number, since it is larger than the sum of its proper divisors (7493987).

30402025 is a wasteful number, since it uses less digits than its factorization.

30402025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6380 (or 6375 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 16.

The square root of 30402025 is about 5513.8031339539. The cubic root of 30402025 is about 312.1050797986.

Adding to 30402025 its reverse (52020403), we get a palindrome (82422428).

The spelling of 30402025 in words is "thirty million, four hundred two thousand, twenty-five".