25728356 has 12 divisors (see below), whose sum is σ = 47394480. Its totient is φ = 12187080.

The previous prime is 25728347. The next prime is 25728371. The reversal of 25728356 is 65382752.

It is a Harshad number since it is a multiple of its sum of digits (38).

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, 169190 + ... + 169341.

It is an arithmetic number, because the mean of its divisors is an integer number (3949540).

Almost surely, 2^25728356 is an apocalyptic number.

It is an amenable number.

25728356 is a deficient number, since it is larger than the sum of its proper divisors (21666124).

25728356 is a wasteful number, since it uses less digits than its factorization.

25728356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 338554 (or 338552 counting only the distinct ones).

The product of its digits is 100800, while the sum is 38.

The square root of 25728356 is about 5072.3126875223. The cubic root of 25728356 is about 295.2142693043.

The spelling of 25728356 in words is "twenty-five million, seven hundred twenty-eight thousand, three hundred fifty-six".