25478812 has 6 divisors (see below), whose sum is σ = 44587928. Its totient is φ = 12739404.

The previous prime is 25478809. The next prime is 25478821. The reversal of 25478812 is 21887452.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 3184848 + ... + 3184855.

Almost surely, 2^25478812 is an apocalyptic number.

It is an amenable number.

25478812 is a deficient number, since it is larger than the sum of its proper divisors (19109116).

25478812 is a wasteful number, since it uses less digits than its factorization.

25478812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6369707 (or 6369705 counting only the distinct ones).

The product of its digits is 35840, while the sum is 37.

The square root of 25478812 is about 5047.6541085934. The cubic root of 25478812 is about 294.2567211740.

The spelling of 25478812 in words is "twenty-five million, four hundred seventy-eight thousand, eight hundred twelve".