25478428 has 12 divisors (see below), whose sum is σ = 44625672. Its totient is φ = 12728240.

The previous prime is 25478417. The next prime is 25478429. The reversal of 25478428 is 82487452.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25478429) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4758 + ... + 8578.

It is an arithmetic number, because the mean of its divisors is an integer number (3718806).

Almost surely, 2^25478428 is an apocalyptic number.

It is an amenable number.

25478428 is a deficient number, since it is larger than the sum of its proper divisors (19147244).

25478428 is a wasteful number, since it uses less digits than its factorization.

25478428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5492 (or 5490 counting only the distinct ones).

The product of its digits is 143360, while the sum is 40.

The square root of 25478428 is about 5047.6160709785. The cubic root of 25478428 is about 294.2552428850.

The spelling of 25478428 in words is "twenty-five million, four hundred seventy-eight thousand, four hundred twenty-eight".