30853925 has 18 divisors (see below), whose sum is σ = 40011762. Its totient is φ = 23599840.

The previous prime is 30853913. The next prime is 30853931. The reversal of 30853925 is 52935803.

30853925 = T₄₁ + T₄₂ + ... + T₅₆₉.

It can be written as a sum of positive squares in 3 ways, for example, as 889249 + 29964676 = 943^2 + 5474^2 .

It is not a de Polignac number, because 30853925 - 2¹⁰ = 30852901 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 12059 + ... + 14391.

Almost surely, 2^30853925 is an apocalyptic number.

It is an amenable number.

30853925 is a deficient number, since it is larger than the sum of its proper divisors (9157837).

30853925 is a wasteful number, since it uses less digits than its factorization.

30853925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2389 (or 2361 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 35.

The square root of 30853925 is about 5554.6309508373. The cubic root of 30853925 is about 313.6438718741.

The spelling of 30853925 in words is "thirty million, eight hundred fifty-three thousand, nine hundred twenty-five".