25875840 has 64 divisors (see below), whose sum is σ = 82485360. Its totient is φ = 6899712.

The previous prime is 25875833. The next prime is 25875847. The reversal of 25875840 is 4857852.

It is an interprime number because it is at equal distance from previous prime (25875833) and next prime (25875847).

It is a tau number, because it is divible by the number of its divisors (64).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25875847) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4819 + ... + 8658.

Almost surely, 2^25875840 is an apocalyptic number.

25875840 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25875840 is an abundant number, since it is smaller than the sum of its proper divisors (56609520).

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

25875840 is a wasteful number, since it uses less digits than its factorization.

25875840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13499 (or 13487 counting only the distinct ones).

The product of its (nonzero) digits is 89600, while the sum is 39.

The square root of 25875840 is about 5086.8300541693. The cubic root of 25875840 is about 295.7772855975. Note that the first 3 decimals are identical.

The spelling of 25875840 in words is "twenty-five million, eight hundred seventy-five thousand, eight hundred forty".