47217225 has 60 divisors (see below), whose sum is σ = 87868880. Its totient is φ = 22360800.

The previous prime is 47217221. The next prime is 47217241. The reversal of 47217225 is 52271274.

It is not a de Polignac number, because 47217225 - 2² = 47217221 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 47217192 and 47217201.

It is not an unprimeable number, because it can be changed into a prime (47217221) by changing a digit.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 1098054 + ... + 1098096.

Almost surely, 2^47217225 is an apocalyptic number.

It is an amenable number.

47217225 is a deficient number, since it is larger than the sum of its proper divisors (40651655).

47217225 is an equidigital number, since it uses as much as digits as its factorization.

47217225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100 (or 62 counting only the distinct ones).

The product of its digits is 7840, while the sum is 30.

The square root of 47217225 is about 6871.4790984183. The cubic root of 47217225 is about 361.4377304367.

Adding to 47217225 its reverse (52271274), we get a palindrome (99488499).

The spelling of 47217225 in words is "forty-seven million, two hundred seventeen thousand, two hundred twenty-five".