25006828 has 60 divisors (see below), whose sum is σ = 55916560. Its totient is φ = 9583200.

The previous prime is 25006789. The next prime is 25006853. The reversal of 25006828 is 82860052.

It is a self number, because there is not a number n which added to its sum of digits gives 25006828.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 409918 + ... + 409978.

Almost surely, 2^25006828 is an apocalyptic number.

25006828 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25006828, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27958280).

25006828 is an abundant number, since it is smaller than the sum of its proper divisors (30909732).

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

25006828 is an equidigital number, since it uses as much as digits as its factorization.

25006828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116 (or 81 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 31.

The square root of 25006828 is about 5000.6827533848. The cubic root of 25006828 is about 292.4283916556.

The spelling of 25006828 in words is "twenty-five million, six thousand, eight hundred twenty-eight".