25317228 has 12 divisors (see below), whose sum is σ = 59073560. Its totient is φ = 8439072.

The previous prime is 25317221. The next prime is 25317247. The reversal of 25317228 is 82271352.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 25317195 and 25317204.

It is not an unprimeable number, because it can be changed into a prime (25317221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1054873 + ... + 1054896.

Almost surely, 2^25317228 is an apocalyptic number.

It is an amenable number.

25317228 is an abundant number, since it is smaller than the sum of its proper divisors (33756332).

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

25317228 is a wasteful number, since it uses less digits than its factorization.

25317228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2109776 (or 2109774 counting only the distinct ones).

The product of its digits is 6720, while the sum is 30.

The square root of 25317228 is about 5031.6227998529. The cubic root of 25317228 is about 293.6333529315.

The spelling of 25317228 in words is "twenty-five million, three hundred seventeen thousand, two hundred twenty-eight".