25808790 has 96 divisors (see below), whose sum is σ = 73198944. Its totient is φ = 5806080.

The previous prime is 25808789. The next prime is 25808791. The reversal of 25808790 is 9780852.

It is an interprime number because it is at equal distance from previous prime (25808789) and next prime (25808791).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25808791) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 142500 + ... + 142680.

It is an arithmetic number, because the mean of its divisors is an integer number (762489).

Almost surely, 2^25808790 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25808790, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36599472).

25808790 is an abundant number, since it is smaller than the sum of its proper divisors (47390154).

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

25808790 is a wasteful number, since it uses less digits than its factorization.

25808790 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 302 (or 295 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 39.

The square root of 25808790 is about 5080.2352307743. The cubic root of 25808790 is about 295.5215899205.

The spelling of 25808790 in words is "twenty-five million, eight hundred eight thousand, seven hundred ninety".