25704420 has 96 divisors (see below), whose sum is σ = 84000000. Its totient is φ = 5870592.

The previous prime is 25704407. The next prime is 25704431. The reversal of 25704420 is 2440752.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 19956 + ... + 21204.

It is an arithmetic number, because the mean of its divisors is an integer number (875000).

Almost surely, 2^25704420 is an apocalyptic number.

25704420 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 25704420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42000000).

25704420 is an abundant number, since it is smaller than the sum of its proper divisors (58295580).

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

25704420 is a wasteful number, since it uses less digits than its factorization.

25704420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1282 (or 1266 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 24.

The square root of 25704420 is about 5069.9526625009. The cubic root of 25704420 is about 295.1226914721.

The spelling of 25704420 in words is "twenty-five million, seven hundred four thousand, four hundred twenty".