25703440 has 120 divisors (see below), whose sum is σ = 71245440. Its totient is φ = 8596224.

The previous prime is 25703429. The next prime is 25703441. The reversal of 25703440 is 4430752.

It is not an unprimeable number, because it can be changed into a prime (25703441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 309639 + ... + 309721.

It is an arithmetic number, because the mean of its divisors is an integer number (593712).

Almost surely, 2^25703440 is an apocalyptic number.

25703440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25703440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35622720).

25703440 is an abundant number, since it is smaller than the sum of its proper divisors (45542000).

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

25703440 is a wasteful number, since it uses less digits than its factorization.

25703440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 189 (or 176 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 25.

The square root of 25703440 is about 5069.8560137345. The cubic root of 25703440 is about 295.1189408342.

The spelling of 25703440 in words is "twenty-five million, seven hundred three thousand, four hundred forty".