25478768 has 20 divisors (see below), whose sum is σ = 56417520. Its totient is φ = 10919424.

The previous prime is 25478749. The next prime is 25478771. The reversal of 25478768 is 86787452.

It is a Smith number, since the sum of its digits (47) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 113633 + ... + 113856.

It is an arithmetic number, because the mean of its divisors is an integer number (2820876).

Almost surely, 2^25478768 is an apocalyptic number.

25478768 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

25478768 is an abundant number, since it is smaller than the sum of its proper divisors (30938752).

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

25478768 is a wasteful number, since it uses less digits than its factorization.

25478768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 227504 (or 227498 counting only the distinct ones).

The product of its digits is 752640, while the sum is 47.

The square root of 25478768 is about 5047.6497501312. The cubic root of 25478768 is about 294.2565517875.

The spelling of 25478768 in words is "twenty-five million, four hundred seventy-eight thousand, seven hundred sixty-eight".