25802028 has 54 divisors (see below), whose sum is σ = 75875436. Its totient is φ = 7371504.

The previous prime is 25802027. The next prime is 25802033. The reversal of 25802028 is 82020852.

It is a junction number, because it is equal to n+sod(n) for n = 25801992 and 25802010.

It is not an unprimeable number, because it can be changed into a prime (25802027) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 5550 + ... + 9077.

Almost surely, 2^25802028 is an apocalyptic number.

25802028 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

25802028 is an abundant number, since it is smaller than the sum of its proper divisors (50073408).

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

25802028 is a wasteful number, since it uses less digits than its factorization.

25802028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14651 (or 14639 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 27.

The square root of 25802028 is about 5079.5696668123. The cubic root of 25802028 is about 295.4957784103.

The spelling of 25802028 in words is "twenty-five million, eight hundred two thousand, twenty-eight".