25226728 has 16 divisors (see below), whose sum is σ = 48193380. Its totient is φ = 12375168.

The previous prime is 25226717. The next prime is 25226753. The reversal of 25226728 is 82762252.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 24621444 + 605284 = 4962^2 + 778^2 .

It is a plaindrome in base 15.

It is a junction number, because it is equal to n+sod(n) for n = 25226693 and 25226702.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29325 + ... + 30172.

Almost surely, 2^25226728 is an apocalyptic number.

It is an amenable number.

25226728 is a deficient number, since it is larger than the sum of its proper divisors (22966652).

25226728 is a wasteful number, since it uses less digits than its factorization.

25226728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59556 (or 59552 counting only the distinct ones).

The product of its digits is 26880, while the sum is 34.

The square root of 25226728 is about 5022.6216262028. The cubic root of 25226728 is about 293.2830572695.

The spelling of 25226728 in words is "twenty-five million, two hundred twenty-six thousand, seven hundred twenty-eight".