25005428 has 12 divisors (see below), whose sum is σ = 50010912. Its totient is φ = 10716600.

The previous prime is 25005397. The next prime is 25005443. The reversal of 25005428 is 82450052.

25005428 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 25005397 and 25005406.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 446498 + ... + 446553.

It is an arithmetic number, because the mean of its divisors is an integer number (4167576).

Almost surely, 2^25005428 is an apocalyptic number.

25005428 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

25005428 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

25005428 is a wasteful number, since it uses less digits than its factorization.

25005428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 893062 (or 893060 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 26.

The square root of 25005428 is about 5000.5427705400. The cubic root of 25005428 is about 292.4229343809.

The spelling of 25005428 in words is "twenty-five million, five thousand, four hundred twenty-eight".