25728550 has 12 divisors (see below), whose sum is σ = 47855196. Its totient is φ = 10291400.

The previous prime is 25728541. The next prime is 25728553. The reversal of 25728550 is 5582752.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25728553) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 257236 + ... + 257335.

It is an arithmetic number, because the mean of its divisors is an integer number (3987933).

Almost surely, 2^25728550 is an apocalyptic number.

25728550 is a deficient number, since it is larger than the sum of its proper divisors (22126646).

25728550 is a wasteful number, since it uses less digits than its factorization.

25728550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 514583 (or 514578 counting only the distinct ones).

The product of its (nonzero) digits is 28000, while the sum is 34.

The square root of 25728550 is about 5072.3318109130. The cubic root of 25728550 is about 295.2150113057.

The spelling of 25728550 in words is "twenty-five million, seven hundred twenty-eight thousand, five hundred fifty".