25872840 has 96 divisors (see below), whose sum is σ = 96108480. Its totient is φ = 5913216.

The previous prime is 25872823. The next prime is 25872841. The reversal of 25872840 is 4827852.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 25872795 and 25872804.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25872841) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 2614 + ... + 7653.

It is an arithmetic number, because the mean of its divisors is an integer number (1001130).

Almost surely, 2^25872840 is an apocalyptic number.

25872840 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25872840 is an abundant number, since it is smaller than the sum of its proper divisors (70235640).

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

25872840 is a wasteful number, since it uses less digits than its factorization.

25872840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10291 (or 10284 counting only the distinct ones).

The product of its (nonzero) digits is 35840, while the sum is 36.

The square root of 25872840 is about 5086.5351664960. The cubic root of 25872840 is about 295.7658545206.

The spelling of 25872840 in words is "twenty-five million, eight hundred seventy-two thousand, eight hundred forty".