25072728 has 16 divisors (see below), whose sum is σ = 62681880. Its totient is φ = 8357568.

The previous prime is 25072711. The next prime is 25072757. The reversal of 25072728 is 82727052.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 522325 + ... + 522372.

Almost surely, 2^25072728 is an apocalyptic number.

It is an amenable number.

25072728 is an abundant number, since it is smaller than the sum of its proper divisors (37609152).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25072728 is a wasteful number, since it uses less digits than its factorization.

25072728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1044706 (or 1044702 counting only the distinct ones).

The product of its (nonzero) digits is 15680, while the sum is 33.

The square root of 25072728 is about 5007.2675183178. The cubic root of 25072728 is about 292.6850432598.

The spelling of 25072728 in words is "twenty-five million, seventy-two thousand, seven hundred twenty-eight".