30378025 has 6 divisors (see below), whose sum is σ = 37668782. Its totient is φ = 24302400.

The previous prime is 30378013. The next prime is 30378053. The reversal of 30378025 is 52087303.

It can be written as a sum of positive squares in 3 ways, for example, as 522729 + 29855296 = 723^2 + 5464^2 .

It is not a de Polignac number, because 30378025 - 2⁹ = 30377513 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30377984 and 30378002.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 607536 + ... + 607585.

Almost surely, 2^30378025 is an apocalyptic number.

It is an amenable number.

30378025 is a deficient number, since it is larger than the sum of its proper divisors (7290757).

30378025 is a wasteful number, since it uses less digits than its factorization.

30378025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1215131 (or 1215126 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 28.

The square root of 30378025 is about 5511.6263480029. The cubic root of 30378025 is about 312.0229307330.

The spelling of 30378025 in words is "thirty million, three hundred seventy-eight thousand, twenty-five".