30125005 has 4 divisors (see below), whose sum is σ = 36150012. Its totient is φ = 24100000.

The previous prime is 30124981. The next prime is 30125023. The reversal of 30125005 is 50052103.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 50052103 = 41 ⋅1220783.

It can be written as a sum of positive squares in 2 ways, for example, as 13972644 + 16152361 = 3738^2 + 4019^2 .

It is not a de Polignac number, because 30125005 - 2⁷ = 30124877 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 30125005.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3012496 + ... + 3012505.

It is an arithmetic number, because the mean of its divisors is an integer number (9037503).

Almost surely, 2^30125005 is an apocalyptic number.

It is an amenable number.

30125005 is a deficient number, since it is larger than the sum of its proper divisors (6025007).

30125005 is an equidigital number, since it uses as much as digits as its factorization.

30125005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6025006.

The product of its (nonzero) digits is 150, while the sum is 16.

The square root of 30125005 is about 5488.6250555125. The cubic root of 30125005 is about 311.1542298749.

Adding to 30125005 its reverse (50052103), we get a palindrome (80177108).

The spelling of 30125005 in words is "thirty million, one hundred twenty-five thousand, five".