25990284 has 12 divisors (see below), whose sum is σ = 60644024. Its totient is φ = 8663424.

The previous prime is 25990273. The next prime is 25990291. The reversal of 25990284 is 48209952.

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

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

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, 1082917 + ... + 1082940.

Almost surely, 2^25990284 is an apocalyptic number.

It is an amenable number.

25990284 is an abundant number, since it is smaller than the sum of its proper divisors (34653740).

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

25990284 is a wasteful number, since it uses less digits than its factorization.

25990284 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2165864 (or 2165862 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 39.

The square root of 25990284 is about 5098.0666923845. The cubic root of 25990284 is about 296.2127001767.

The spelling of 25990284 in words is "twenty-five million, nine hundred ninety thousand, two hundred eighty-four".