947478925 has 6 divisors (see below), whose sum is σ = 1174873898. Its totient is φ = 757983120.

The previous prime is 947478919. The next prime is 947478929. The reversal of 947478925 is 529874749.

947478925 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 61999876 + 885479049 = 7874^2 + 29757^2 .

It is not a de Polignac number, because 947478925 - 2¹¹ = 947476877 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (947478929) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 18949554 + ... + 18949603.

Almost surely, 2^947478925 is an apocalyptic number.

It is an amenable number.

947478925 is a deficient number, since it is larger than the sum of its proper divisors (227394973).

947478925 is a wasteful number, since it uses less digits than its factorization.

947478925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37899167 (or 37899162 counting only the distinct ones).

The product of its digits is 5080320, while the sum is 55.

The square root of 947478925 is about 30781.1456089600. The cubic root of 947478925 is about 982.1772103151.

The spelling of 947478925 in words is "nine hundred forty-seven million, four hundred seventy-eight thousand, nine hundred twenty-five".