30925985 has 4 divisors (see below), whose sum is σ = 37111188. Its totient is φ = 24740784.

The previous prime is 30925933. The next prime is 30925997. The reversal of 30925985 is 58952903.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 58952903 = 307 ⋅192029.

It can be written as a sum of positive squares in 2 ways, for example, as 18696976 + 12229009 = 4324^2 + 3497^2 .

It is a cyclic number.

It is not a de Polignac number, because 30925985 - 2²⁴ = 14148769 is a prime.

It is a Duffinian number.

It is a Curzon 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, 3092594 + ... + 3092603.

It is an arithmetic number, because the mean of its divisors is an integer number (9277797).

Almost surely, 2^30925985 is an apocalyptic number.

It is an amenable number.

30925985 is a deficient number, since it is larger than the sum of its proper divisors (6185203).

30925985 is an equidigital number, since it uses as much as digits as its factorization.

30925985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6185202.

The product of its (nonzero) digits is 97200, while the sum is 41.

The square root of 30925985 is about 5561.1136474631. The cubic root of 30925985 is about 313.8878560136.

The spelling of 30925985 in words is "thirty million, nine hundred twenty-five thousand, nine hundred eighty-five".