25305828 has 12 divisors (see below), whose sum is σ = 59046960. Its totient is φ = 8435272.

The previous prime is 25305823. The next prime is 25305829. The reversal of 25305828 is 82850352.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (25305823) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1054398 + ... + 1054421.

It is an arithmetic number, because the mean of its divisors is an integer number (4920580).

Almost surely, 2^25305828 is an apocalyptic number.

It is an amenable number.

25305828 is an abundant number, since it is smaller than the sum of its proper divisors (33741132).

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

25305828 is a wasteful number, since it uses less digits than its factorization.

25305828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2108826 (or 2108824 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 33.

The square root of 25305828 is about 5030.4898369841. The cubic root of 25305828 is about 293.5892732929.

The spelling of 25305828 in words is "twenty-five million, three hundred five thousand, eight hundred twenty-eight".