25904634 has 96 divisors (see below), whose sum is σ = 65598336. Its totient is φ = 6773760.

The previous prime is 25904633. The next prime is 25904639. The reversal of 25904634 is 43640952.

It is a junction number, because it is equal to n+sod(n) for n = 25904595 and 25904604.

It is not an unprimeable number, because it can be changed into a prime (25904633) 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, 354822 + ... + 354894.

It is an arithmetic number, because the mean of its divisors is an integer number (683316).

Almost surely, 2^25904634 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25904634, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32799168).

25904634 is an abundant number, since it is smaller than the sum of its proper divisors (39693702).

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

25904634 is a wasteful number, since it uses less digits than its factorization.

25904634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180 (or 173 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 33.

The square root of 25904634 is about 5089.6595170994. The cubic root of 25904634 is about 295.8869561639.

The spelling of 25904634 in words is "twenty-five million, nine hundred four thousand, six hundred thirty-four".