25728308 has 6 divisors (see below), whose sum is σ = 45024546. Its totient is φ = 12864152.

The previous prime is 25728301. The next prime is 25728323. The reversal of 25728308 is 80382752.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 20539024 + 5189284 = 4532^2 + 2278^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25728301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3216035 + ... + 3216042.

It is an arithmetic number, because the mean of its divisors is an integer number (7504091).

Almost surely, 2^25728308 is an apocalyptic number.

It is an amenable number.

25728308 is a deficient number, since it is larger than the sum of its proper divisors (19296238).

25728308 is a wasteful number, since it uses less digits than its factorization.

25728308 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6432081 (or 6432079 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 35.

The square root of 25728308 is about 5072.3079559506. The cubic root of 25728308 is about 295.2140857158.

The spelling of 25728308 in words is "twenty-five million, seven hundred twenty-eight thousand, three hundred eight".