25768220 has 48 divisors (see below), whose sum is σ = 56125440. Its totient is φ = 9931584.

The previous prime is 25768217. The next prime is 25768247. The reversal of 25768220 is 2286752.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 74087 + ... + 74433.

It is an arithmetic number, because the mean of its divisors is an integer number (1169280).

Almost surely, 2^25768220 is an apocalyptic number.

25768220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25768220 is an abundant number, since it is smaller than the sum of its proper divisors (30357220).

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

25768220 is a wasteful number, since it uses less digits than its factorization.

25768220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 482 (or 480 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 32.

The square root of 25768220 is about 5076.2407350322. The cubic root of 25768220 is about 295.3666608108.

The spelling of 25768220 in words is "twenty-five million, seven hundred sixty-eight thousand, two hundred twenty".