25306228 has 24 divisors (see below), whose sum is σ = 45722880. Its totient is φ = 12249120.

The previous prime is 25306223. The next prime is 25306243. The reversal of 25306228 is 82260352.

It is a junction number, because it is equal to n+sod(n) for n = 25306196 and 25306205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25306223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15993 + ... + 17503.

It is an arithmetic number, because the mean of its divisors is an integer number (1905120).

Almost surely, 2^25306228 is an apocalyptic number.

It is an amenable number.

25306228 is a deficient number, since it is larger than the sum of its proper divisors (20416652).

25306228 is a wasteful number, since it uses less digits than its factorization.

25306228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1647 (or 1645 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 25306228 is about 5030.5295943867. The cubic root of 25306228 is about 293.5908201710.

The spelling of 25306228 in words is "twenty-five million, three hundred six thousand, two hundred twenty-eight".