30485725 has 12 divisors (see below), whose sum is σ = 37883860. Its totient is φ = 24336000.

The previous prime is 30485717. The next prime is 30485729. The reversal of 30485725 is 52758403.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 4485924 + 25999801 = 2118^2 + 5099^2 .

It is not a de Polignac number, because 30485725 - 2³ = 30485717 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30485729) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14011 + ... + 16039.

Almost surely, 2^30485725 is an apocalyptic number.

It is an amenable number.

30485725 is a deficient number, since it is larger than the sum of its proper divisors (7398135).

30485725 is a wasteful number, since it uses less digits than its factorization.

30485725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2640 (or 2635 counting only the distinct ones).

The product of its (nonzero) digits is 33600, while the sum is 34.

The square root of 30485725 is about 5521.3879595623. The cubic root of 30485725 is about 312.3912368169.

The spelling of 30485725 in words is "thirty million, four hundred eighty-five thousand, seven hundred twenty-five".