25797030 has 128 divisors (see below), whose sum is σ = 76032000. Its totient is φ = 5588352.

The previous prime is 25797019. The next prime is 25797043. The reversal of 25797030 is 3079752.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 25796982 and 25797000.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 236616 + ... + 236724.

It is an arithmetic number, because the mean of its divisors is an integer number (594000).

Almost surely, 2^25797030 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25797030, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38016000).

25797030 is an abundant number, since it is smaller than the sum of its proper divisors (50234970).

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

25797030 is a wasteful number, since it uses less digits than its factorization.

25797030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163 (or 149 counting only the distinct ones).

The product of its (nonzero) digits is 13230, while the sum is 33.

The square root of 25797030 is about 5079.0776721763. The cubic root of 25797030 is about 295.4766974390.

The spelling of 25797030 in words is "twenty-five million, seven hundred ninety-seven thousand, thirty".