25934840 has 16 divisors (see below), whose sum is σ = 58353480. Its totient is φ = 10373920.

The previous prime is 25934827. The next prime is 25934849. The reversal of 25934840 is 4843952.

It is a self number, because there is not a number n which added to its sum of digits gives 25934840.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25934849) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 324146 + ... + 324225.

Almost surely, 2^25934840 is an apocalyptic number.

25934840 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25934840 is an abundant number, since it is smaller than the sum of its proper divisors (32418640).

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

25934840 is a wasteful number, since it uses less digits than its factorization.

25934840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 648382 (or 648378 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 35.

The square root of 25934840 is about 5092.6260416410. The cubic root of 25934840 is about 296.0019174456.

The spelling of 25934840 in words is "twenty-five million, nine hundred thirty-four thousand, eight hundred forty".