25026840 has 64 divisors (see below), whose sum is σ = 83426400. Its totient is φ = 6673536.

The previous prime is 25026823. The next prime is 25026847. The reversal of 25026840 is 4862052.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25026847) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10507 + ... + 12666.

Almost surely, 2^25026840 is an apocalyptic number.

25026840 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25026840 is an abundant number, since it is smaller than the sum of its proper divisors (58399560).

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

25026840 is a wasteful number, since it uses less digits than its factorization.

25026840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23193 (or 23183 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

The square root of 25026840 is about 5002.6832800008. The cubic root of 25026840 is about 292.5063772443.

Adding to 25026840 its reverse (4862052), we get a palindrome (29888892).

The spelling of 25026840 in words is "twenty-five million, twenty-six thousand, eight hundred forty".