30997025 has 12 divisors (see below), whose sum is σ = 39375084. Its totient is φ = 24192000.

The previous prime is 30997019. The next prime is 30997051. The reversal of 30997025 is 52079903.

It can be written as a sum of positive squares in 6 ways, for example, as 10349089 + 20647936 = 3217^2 + 4544^2 .

It is not a de Polignac number, because 30997025 - 2⁸ = 30996769 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14096 + ... + 16145.

It is an arithmetic number, because the mean of its divisors is an integer number (3281257).

Almost surely, 2^30997025 is an apocalyptic number.

It is an amenable number.

30997025 is a deficient number, since it is larger than the sum of its proper divisors (8378059).

30997025 is a wasteful number, since it uses less digits than its factorization.

30997025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30292 (or 30287 counting only the distinct ones).

The product of its (nonzero) digits is 17010, while the sum is 35.

The square root of 30997025 is about 5567.4971935332. The cubic root of 30997025 is about 314.1280158774.

The spelling of 30997025 in words is "thirty million, nine hundred ninety-seven thousand, twenty-five".