47091825 has 72 divisors (see below), whose sum is σ = 94011840. Its totient is φ = 22339200.

The previous prime is 47091809. The next prime is 47091827. The reversal of 47091825 is 52819074.

47091825 is a `hidden beast` number, since 470 + 9 + 182 + 5 = 666.

It is not a de Polignac number, because 47091825 - 2⁴ = 47091809 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 47091825.

It is not an unprimeable number, because it can be changed into a prime (47091827) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 130996 + ... + 131354.

It is an arithmetic number, because the mean of its divisors is an integer number (1305720).

Almost surely, 2^47091825 is an apocalyptic number.

47091825 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

47091825 is a deficient number, since it is larger than the sum of its proper divisors (46920015).

47091825 is a wasteful number, since it uses less digits than its factorization.

47091825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 439 (or 431 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 36.

The square root of 47091825 is about 6862.3483589803. The cubic root of 47091825 is about 361.1174767232.

The spelling of 47091825 in words is "forty-seven million, ninety-one thousand, eight hundred twenty-five".