25502228 has 6 divisors (see below), whose sum is σ = 44628906. Its totient is φ = 12751112.

The previous prime is 25502221. The next prime is 25502231. The reversal of 25502228 is 82220552.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 18679684 + 6822544 = 4322^2 + 2612^2 .

It is a junction number, because it is equal to n+sod(n) for n = 25502197 and 25502206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25502221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3187775 + ... + 3187782.

It is an arithmetic number, because the mean of its divisors is an integer number (7438151).

Almost surely, 2^25502228 is an apocalyptic number.

It is an amenable number.

25502228 is a deficient number, since it is larger than the sum of its proper divisors (19126678).

25502228 is a wasteful number, since it uses less digits than its factorization.

25502228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6375561 (or 6375559 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 26.

The square root of 25502228 is about 5049.9730692351. The cubic root of 25502228 is about 294.3468379560.

The spelling of 25502228 in words is "twenty-five million, five hundred two thousand, two hundred twenty-eight".