47278625 has 8 divisors (see below), whose sum is σ = 59003880. Its totient is φ = 37822800.

The previous prime is 47278603. The next prime is 47278661. The reversal of 47278625 is 52687274.

It can be written as a sum of positive squares in 4 ways, for example, as 1459264 + 45819361 = 1208^2 + 6769^2 .

It is not a de Polignac number, because 47278625 - 2⁸ = 47278369 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 188990 + ... + 189239.

It is an arithmetic number, because the mean of its divisors is an integer number (7375485).

Almost surely, 2^47278625 is an apocalyptic number.

It is an amenable number.

47278625 is a deficient number, since it is larger than the sum of its proper divisors (11725255).

47278625 is an equidigital number, since it uses as much as digits as its factorization.

47278625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 378244 (or 378234 counting only the distinct ones).

The product of its digits is 188160, while the sum is 41.

The square root of 47278625 is about 6875.9453895446. The cubic root of 47278625 is about 361.5943305206.

It can be divided in two parts, 472 and 78625, that added together give a palindrome (79097).

The spelling of 47278625 in words is "forty-seven million, two hundred seventy-eight thousand, six hundred twenty-five".