47785725 has 108 divisors (see below), whose sum is σ = 100845108. Its totient is φ = 21427200.

The previous prime is 47785711. The next prime is 47785733. The reversal of 47785725 is 52758774.

47785725 = 953² + 954² + ... + 1002².

47785725 is a `hidden beast` number, since 4 + 7 + 78 + 572 + 5 = 666.

It can be written as a sum of positive squares in 6 ways, for example, as 1695204 + 46090521 = 1302^2 + 6789^2 .

It is not a de Polignac number, because 47785725 - 2⁸ = 47785469 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 107 ways as a sum of consecutive naturals, for example, 1541460 + ... + 1541490.

It is an arithmetic number, because the mean of its divisors is an integer number (933751).

Almost surely, 2^47785725 is an apocalyptic number.

47785725 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

47785725 is an abundant number, since it is smaller than the sum of its proper divisors (53059383).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

47785725 is a wasteful number, since it uses less digits than its factorization.

47785725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108 (or 69 counting only the distinct ones).

The product of its digits is 548800, while the sum is 45.

The square root of 47785725 is about 6912.7219675031. The cubic root of 47785725 is about 362.8825292092.

The spelling of 47785725 in words is "forty-seven million, seven hundred eighty-five thousand, seven hundred twenty-five".